diff --git a/ANNOUNCE b/ANNOUNCE
index 490a275..8739266 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.0.1c May 9, 1998
+Libpng 1.0.1d May 21, 1998
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -32,7 +32,7 @@
   Added warnings when people try to use transforms they've defined out.
   Collapsed 4 "i" and "c" loops into single "i" loops in pngrtran and pngwtran.
   Revised paragraph about png_set_expand() in libpng.txt and libpng.3 (Greg)
-version 1.0.1c [May 9, 1998]
+version 1.0.1c [May 11, 1998]
   Fixed a bug in pngrtran.c (introduced in libpng-1.0.1a) where the masks for
     filler bytes should have been 0xff instead of 0xf.
   Added max_pixel_depth=32 in pngrutil.c when using FILLER with palette images.
@@ -42,6 +42,19 @@
     for consistency, in pngconf.h
   Added individual "ifndef PNG_NO_CAPABILITY" for the capabilities in pngconf.h
     to make it easier to remove unwanted capabilities via the compile line
+  Made some corrections to grammar (which, it's) in documentation (Greg).
+  Corrected example.c, use of row_pointers in png_write_image().
+version 1.0.1d [May 21, 1998]
+  Corrected several statements that some compilers interpret as illegal use
+    of side effects in pngrutil.c and pngtrans.c, that were introduced in
+    version 1.0.1b
+  Revised png_read_rows() to avoid repeated if-testing for NULL (A Kleinert)
+  More corrections to example.c, use of row_pointers in png_write_image()
+    and png_read_rows().
+  Added pngdll.mak and pngdef.pas to scripts directory, contributed by
+    Bob Dellaca, to make a png32bd.dll with Borland C++ 4.5
+  Fixed error in example.c with png_set_text: num_text is 3, not 2 (Guido V.)
+  Changed several loops from count-down to count-up, for consistency.
 
 Send comments/corrections/commendations to
 png-implement@dworkin.wustl.edu or to randeg@alumni.rpi.edu
diff --git a/CHANGES b/CHANGES
index 3d72a09..925706a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -312,7 +312,7 @@
   Added warnings when people try to use transforms they've defined out.
   Collapsed 4 "i" and "c" loops into single "i" loops in pngrtran and pngwtran.
   Revised paragraph about png_set_expand() in libpng.txt and libpng.3 (Greg)
-version 1.0.1c [May 9, 1998]
+version 1.0.1c [May 11, 1998]
   Fixed a bug in pngrtran.c (introduced in libpng-1.0.1a) where the masks for
     filler bytes should have been 0xff instead of 0xf.
   Added max_pixel_depth=32 in pngrutil.c when using FILLER with palette images.
@@ -322,3 +322,16 @@
     for consistency, in pngconf.h
   Added individual "ifndef PNG_NO_[CAPABILITY]" in pngconf.h to make it easier
     to remove unwanted capabilities via the compile line
+  Made some corrections to grammar (which, it's) in documentation (Greg).
+  Corrected example.c, use of row_pointers in png_write_image().
+version 1.0.1d [May 21, 1998]
+  Corrected several statements that some compilers interpret as illegal use
+    of side effects in pngrutil.c and pngtrans.c, that were introduced in
+    version 1.0.1b
+  Revised png_read_rows() to avoid repeated if-testing for NULL (A Kleinert)
+  More corrections to example.c, use of row_pointers in png_write_image()
+    and png_read_rows().
+  Added pngdll.mak and pngdef.pas to scripts directory, contributed by
+    Bob Dellaca, to make a png32bd.dll with Borland C++ 4.5
+  Fixed error in example.c with png_set_text: num_text is 3, not 2 (Guido V.)
+  Changed several loops from count-down to count-up, for consistency.
diff --git a/INSTALL b/INSTALL
index 803e9fb..aa92a3f 100644
--- a/INSTALL
+++ b/INSTALL
@@ -10,8 +10,8 @@
 version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-%VER% or "lpng100" and "zlib-1.1.1"
-or "zlib111") so that you have directories called "zlib" and "libpng".
+might be called "libpng-%VER% or "lpng100" and "zlib-1.1.2"
+or "zlib112") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
 
@@ -61,6 +61,8 @@
       pngos2.def    =>  OS/2 module definition file used by makefile.os2
       makefile.wat  =>  Watcom 10a+ Makefile, 32-bit flat memory model
       makevms.com   =>  VMS build script
+      pngdll.mak    =>  To make a png32bd.dll with Borland C++ 4.5
+      pngdef.pas    =>  Defines for a png32bd.dll with Borland C++ 4.5
 
 Copy the file (or files) that you need from the
 scripts directory into this directory, for example
diff --git a/KNOWNBUG b/KNOWNBUG
index 1933fde..76c51e7 100644
--- a/KNOWNBUG
+++ b/KNOWNBUG
@@ -42,7 +42,9 @@
 
       Question whether i-- or --i is better.
 
-      STATUS: Under investigation.
+      STATUS: Under investigation.  About 150 loops turned around
+      in libpng-1.0.1d, for testing.  Object files and executables
+      are about 20k smaller in SGI and gcc-compiled codes.  
 
    b. Remove products and structure members from loop tests -- Glenn R-P
 
@@ -156,3 +158,29 @@
 
    
    STATUS: Fixed in libpng-1.0.1c
+
+17. May 10, 1998 -- DOCUMENTATION -- Greg
+
+   There are a number of incorrect usages of "which" and "it's" in the
+   comments.
+
+   STATUS:
+
+   Fixed in libpng-1.0.1c
+
+18. May 20, 1998 -- BUG -- illegal use of side effects -- Magnus Holmgren
+
+   In libpng-1.0.1b several illegal uses of side effects were
+   introduced while tuning loops in pngrutil.c; also one in pngtrans.c.
+
+   STATUS:
+
+   Fixed in libpng-1.0.1d
+
+19. May 20, 1998 -- ENHANCEMENT --  script for making DLL -- Bob Dellaca
+
+   Bob Dellaca contributed script for making PNG DLL on Borland C++ 4.5
+
+   STATUS:
+
+   Added to distribution in libpng-1.0.1d 
diff --git a/README b/README
index e2c4ffe..6afca2b 100644
--- a/README
+++ b/README
@@ -178,6 +178,8 @@
         makefile.wat  =>  Watcom 10a+ Makefile, 32-bit flat memory model
         pngos2.def    =>  OS/2 module definition file used by makefile.os2
         makevms.com   =>  VMS build script
+        pngdll.mak    =>  To make a png32bd.dll with Borland C++ 4.5
+        pngdef.pas    =>  Defines for a png32bd.dll with Borland C++ 4.5
 
 Good luck, and happy coding.
 
diff --git a/example.c b/example.c
index a656c13..b04d406 100644
--- a/example.c
+++ b/example.c
@@ -316,18 +316,18 @@
 #ifdef single /* Read the image a single row at a time */
       for (y = 0; y < height; y++)
       {
-         png_bytep row_pointers = row[y];
-         png_read_rows(png_ptr, &row_pointers, NULL, 1);
+         png_read_rows(png_ptr, &row_pointers[y], NULL, 1);
       }
 
 #else no_single /* Read the image several rows at a time */
       for (y = 0; y < height; y += number_of_rows)
       {
 #ifdef sparkle /* Read the image using the "sparkle" effect. */
-         png_read_rows(png_ptr, row_pointers, NULL, number_of_rows);
+         png_read_rows(png_ptr, &row_pointers[y], NULL, number_of_rows);
         
+         png_read_rows(png_ptr, NULL, row_pointers[y], number_of_rows);
 #else no_sparkle /* Read the image using the "rectangle" effect */
-         png_read_rows(png_ptr, NULL, row_pointers, number_of_rows);
+         png_read_rows(png_ptr, NULL, &row_pointers[y], number_of_rows);
 #endif no_sparkle /* use only one of these two methods */
       }
      
@@ -581,7 +581,7 @@
    text_ptr[2].key = "Description";
    text_ptr[2].text = "<long text>";
    text_ptr[2].compression = PNG_TEXT_COMPRESSION_zTXt;
-   png_set_text(png_ptr, info_ptr, text_ptr, 2);
+   png_set_text(png_ptr, info_ptr, text_ptr, 3);
 
    /* other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs, */
    /* note that if sRGB is present the cHRM chunk must be ignored
@@ -638,7 +638,11 @@
     * layout, however, so choose what fits your needs best).  You need to
     * use the first method if you aren't handling interlacing yourself.
     */
-   png_byte row_pointers[height][width];
+   png_uint_32 k, height, width;
+   png_byte image[height][width];
+   png_bytep row_pointers[height];
+   for (k = 0; k < height; k++)
+     row_pointers[k] = image + k*width;
 
    /* One of the following output methods is REQUIRED */
 #ifdef entire /* write out the entire image data in one call */
@@ -653,13 +657,12 @@
    for (pass = 0; pass < number_passes; pass++)
    {
       /* Write a few rows at a time. */
-      png_write_rows(png_ptr, row_pointers, number_of_rows);
+      png_write_rows(png_ptr, &row_pointers[first_row], number_of_rows);
 
       /* If you are only writing one row at a time, this works */
       for (y = 0; y < height; y++)
       {
-         png_bytep row_pointers = row[y];
-         png_write_rows(png_ptr, &row_pointers, 1);
+         png_write_rows(png_ptr, &row_pointers[y], 1);
       }
    }
 #endif no_entire /* use only one output method */
diff --git a/libpng.3 b/libpng.3
index bd71d52..167e1f0 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "May 9, 1998"
+.TH LIBPNG 3 "May 21, 1998"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library
 .SH SYNOPSIS
@@ -396,7 +396,7 @@
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.0.1c May 9, 1998
+ libpng version 1.0.1d May 21, 1998
  Updated and distributed by Glenn Randers-Pehrson
  <randeg@alumni.rpi.edu>
  Copyright (c) 1998, Glenn Randers-Pehrson
@@ -2374,7 +2374,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
   
-Libpng version 1.0.1c May 9, 1998:
+Libpng version 1.0.1d May 21, 1998:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (randeg@alumni.rpi.edu).
 
diff --git a/libpng.txt b/libpng.txt
index 295421d..7506e57 100644
--- a/libpng.txt
+++ b/libpng.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.0.1c May 9, 1998
+ libpng version 1.0.1d May 21, 1998
  Updated and distributed by Glenn Randers-Pehrson
  <randeg@alumni.rpi.edu>
  Copyright (c) 1998, Glenn Randers-Pehrson
diff --git a/libpngpf.3 b/libpngpf.3
index f1fa296..824f4dd 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "May 9, 1998"
+.TH LIBPNGPF 3 "May 21, 1998"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library
 (private functions)
diff --git a/png.5 b/png.5
index 0ef57d3..3ba3079 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "May 9, 1998"
+.TH PNG 5 "May 21, 1998"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 73f96ea..82bee27 100644
--- a/png.c
+++ b/png.c
@@ -1,12 +1,12 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * libpng 1.0.1c
+ * libpng 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  */
 
 #define PNG_INTERNAL
@@ -16,7 +16,7 @@
 /* Version information for C files.  This had better match the version
  * string defined in png.h.
  */
-char png_libpng_ver[12] = "1.0.1c";
+char png_libpng_ver[12] = "1.0.1d";
 
 /* Place to hold the signature string for a PNG file. */
 png_byte FARDATA png_sig[8] = {137, 80, 78, 71, 13, 10, 26, 10};
diff --git a/png.h b/png.h
index 35c4c37..03213da 100644
--- a/png.h
+++ b/png.h
@@ -1,12 +1,12 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng 1.0.1c
+ * libpng 1.0.1d
  * For conditions of distribution and use, see the COPYRIGHT NOTICE below.
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998 Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  *
  * Note about libpng version numbers:
  *
@@ -120,7 +120,7 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.0.1c"
+#define PNG_LIBPNG_VER_STRING "1.0.1d"
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * We must not include leading zeros.
@@ -233,7 +233,7 @@
  * With libpng < 0.95, it was only possible to directly set and read the
  * the values in the png_info_struct, which meant that the contents and
  * order of the values had to remain fixed.  With libpng 0.95 and later,
- * however, * there are now functions which abstract the contents of
+ * however, there are now functions that abstract the contents of
  * png_info_struct from the application, so this makes it easier to use
  * libpng with dynamic libraries, and even makes it possible to use
  * libraries that don't have all of the libpng ancillary chunk-handing
@@ -291,14 +291,14 @@
    /* The tEXt and zTXt chunks contain human-readable textual data in
     * uncompressed and compressed forms, respectively.  The data in "text"
     * is an array of pointers to uncompressed, null-terminated C strings.
-    * Each chunk has a keyword which describes the textual data contained
+    * Each chunk has a keyword that describes the textual data contained
     * in that chunk.  Keywords are not required to be unique, and the text
     * string may be empty.  Any number of text chunks may be in an image.
     */
    int num_text; /* number of comments read/to write */
    int max_text; /* current size of text array */
    png_textp text; /* array of comments read/to write */
-#endif /* PNG_READ_tEXt/zTXt_SUPPORTED || PNG_WRITE_tEXt/zTXt_SUPPORTED */
+#endif /* PNG_READ_OR_WRITE_tEXt_OR_zTXt_SUPPORTED */
 #if defined(PNG_READ_tIME_SUPPORTED) || defined(PNG_WRITE_tIME_SUPPORTED)
    /* The tIME chunk holds the last time the displayed image data was
     * modified.  See the png_time struct for the contents of this struct.
@@ -321,7 +321,7 @@
     * same order as the palette colors, starting from index 0.  Values
     * for the data are in the range [0, 255], ranging from fully transparent
     * to fully opaque, respectively.  For non-paletted images, there is a
-    * single color specified which should be treated as fully transparent.
+    * single color specified that should be treated as fully transparent.
     * Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
     */
    png_bytep trans; /* transparent values for paletted image */
@@ -493,10 +493,11 @@
 typedef png_row_info FAR * png_row_infop;
 typedef png_row_info FAR * FAR * png_row_infopp;
 
-/* These are the function types for the I/O functions, and the functions which
- * modify the default I/O functions to user I/O functions.  The png_error_ptr
- * type should match that of user supplied warning and error functions, while
- * the png_rw_ptr type should match that of the user read/write data functions.
+/* These are the function types for the I/O functions and for the functions
+ * that allow the user to override the default I/O functions with his or her
+ * own.  The png_error_ptr type should match that of user-supplied warning
+ * and error functions, while the png_rw_ptr type should match that of the
+ * user read/write data functions.
  */
 typedef struct png_struct_def png_struct;
 typedef png_struct FAR * png_structp;
@@ -1140,7 +1141,7 @@
 extern PNG_EXPORT(void,png_process_data) PNGARG((png_structp png_ptr,
    png_infop info_ptr, png_bytep buffer, png_size_t buffer_size));
 
-/* function which combines rows.  Not very much different than the
+/* function that combines rows.  Not very much different than the
  * png_combine_row() call.  Is this even used?????
  */
 extern PNG_EXPORT(void,png_progressive_combine_row) PNGARG((png_structp png_ptr,
@@ -1392,8 +1393,7 @@
     defined(PNG_READ_zTXt_SUPPORTED) || defined(PNG_WRITE_zTXt_SUPPORTED)
 extern PNG_EXPORT(void,png_set_text) PNGARG((png_structp png_ptr,
    png_infop info_ptr, png_textp text_ptr, int num_text));
-#endif /* PNG_READ_tEXt_SUPPORTED || PNG_WRITE_tEXt_SUPPORTED ||
-          PNG_READ_zTXt_SUPPORTED || PNG_WRITE_zTXt_SUPPORTED */
+#endif /* PNG_READ_OR_WRITE_tEXt_OR_zTXt_SUPPORTED */
 
 #if defined(PNG_READ_tIME_SUPPORTED)
 extern PNG_EXPORT(png_uint_32,png_get_tIME) PNGARG((png_structp png_ptr,
@@ -1446,9 +1446,9 @@
 #endif /* (PNG_DEBUG > 0) */
 
 #ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
-/* With these routines, we avoid an integer divide, which will be slower on
- * many machines.  However, it does take more operations than the corresponding
- * divide method, so it may be slower on some RISC systems.  There are two
+/* With these routines we avoid an integer divide, which will be slower on
+ * most machines.  However, it does take more operations than the corresponding
+ * divide method, so it may be slower on a few RISC systems.  There are two
  * shifts (by 8 or 16 bits) and an addition, versus a single integer divide.
  *
  * Note that the rounding factors are NOT supposed to be the same!  128 and
diff --git a/pngconf.h b/pngconf.h
index 08b2404..cc9d693 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,12 +1,12 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng 1.0.1c
+ * libpng 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  */
 
 /* Any machine specific code is near the front of this file, so if you
@@ -47,7 +47,7 @@
 #define PNG_MAX_MALLOC_64K
 #endif
 
-/* This protects us against compilers which run on a windowing system
+/* This protects us against compilers that run on a windowing system
  * and thus don't have or would rather us not use the stdio types:
  * stdin, stdout, and stderr.  The only one currently used is stderr
  * in png_error() and png_warning().  #defining PNG_NO_STDIO will
@@ -309,7 +309,9 @@
 #define PNG_READ_USER_TRANSFORM_SUPPORTED
 #endif
 /* the following aren't implemented yet
+#ifndef PNG_NO_READ_RGB_TO_GRAY
 #define PNG_READ_RGB_TO_GRAY_SUPPORTED
+#endif
  */
 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
 
@@ -428,88 +430,88 @@
 #endif
 
 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
-#ifndef PNG_NO_PNG_READ_bKGD
+#ifndef PNG_NO_READ_bKGD
 #define PNG_READ_bKGD_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_READ_cHRM
+#ifndef PNG_NO_READ_cHRM
 #define PNG_READ_cHRM_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_READ_gAMA
+#ifndef PNG_NO_READ_gAMA
 #define PNG_READ_gAMA_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_READ_hIST
+#ifndef PNG_NO_READ_hIST
 #define PNG_READ_hIST_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_READ_oFFs
+#ifndef PNG_NO_READ_oFFs
 #define PNG_READ_oFFs_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_READ_pCAL
+#ifndef PNG_NO_READ_pCAL
 #define PNG_READ_pCAL_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_READ_pHYs
+#ifndef PNG_NO_READ_pHYs
 #define PNG_READ_pHYs_SUPPORTED
 #endif
 #ifndef PNG_NO_READ_sBIT
 #define PNG_READ_sBIT_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_READ_sRGB
+#ifndef PNG_NO_READ_sRGB
 #define PNG_READ_sRGB_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_READ_tEXt
+#ifndef PNG_NO_READ_tEXt
 #define PNG_READ_tEXt_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_READ_tIME
+#ifndef PNG_NO_READ_tIME
 #define PNG_READ_tIME_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_READ_tRNS
+#ifndef PNG_NO_READ_tRNS
 #define PNG_READ_tRNS_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_READ_zTXt
+#ifndef PNG_NO_READ_zTXt
 #define PNG_READ_zTXt_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_READ_OPT_PLTE
+#ifndef PNG_NO_READ_OPT_PLTE
 #define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the optional */
 #endif                              /* PLTE chunk in RGB and RGBA images */
 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
 
 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
-#ifndef PNG_NO_PNG_WRITE_bKGD
+#ifndef PNG_NO_WRITE_bKGD
 #define PNG_WRITE_bKGD_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_WRITE_cHRM
+#ifndef PNG_NO_WRITE_cHRM
 #define PNG_WRITE_cHRM_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_WRITE_gAMA
+#ifndef PNG_NO_WRITE_gAMA
 #define PNG_WRITE_gAMA_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_WRITE_hIST
+#ifndef PNG_NO_WRITE_hIST
 #define PNG_WRITE_hIST_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_WRITE_oFFs
+#ifndef PNG_NO_WRITE_oFFs
 #define PNG_WRITE_oFFs_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_WRITE_pCAL
+#ifndef PNG_NO_WRITE_pCAL
 #define PNG_WRITE_pCAL_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_WRITE_pHYs
+#ifndef PNG_NO_WRITE_pHYs
 #define PNG_WRITE_pHYs_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_WRITE_sBIT
+#ifndef PNG_NO_WRITE_sBIT
 #define PNG_WRITE_sBIT_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_WRITE_sRGB
+#ifndef PNG_NO_WRITE_sRGB
 #define PNG_WRITE_sRGB_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_WRITE_tEXt
+#ifndef PNG_NO_WRITE_tEXt
 #define PNG_WRITE_tEXt_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_WRITE_tIME
+#ifndef PNG_NO_WRITE_tIME
 #define PNG_WRITE_tIME_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_WRITE_tRNS
+#ifndef PNG_NO_WRITE_tRNS
 #define PNG_WRITE_tRNS_SUPPORTED
 #endif
-#ifndef PNG_NO_PNG_WRITE_zTXt
+#ifndef PNG_NO_WRITE_zTXt
 #define PNG_WRITE_zTXt_SUPPORTED
 #endif
 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
diff --git a/pngerror.c b/pngerror.c
index f5d90cf..39e8935 100644
--- a/pngerror.c
+++ b/pngerror.c
@@ -1,14 +1,14 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * libpng 1.0.1c
+ * libpng 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  *
- * This file provides a location for all error handling.  Users which
+ * This file provides a location for all error handling.  Users who
  * need special error handling are expected to write replacement functions
  * and use png_set_error_fn() to use those functions.  See the instructions
  * at each function.
@@ -52,7 +52,7 @@
       png_default_warning(png_ptr, message);
 }
 
-/* These utilities are used internally to build an error message which relates
+/* These utilities are used internally to build an error message that relates
  * to the current chunk.  The chunk name comes from png_ptr->chunk_name,
  * this is used to prefix the message.  The message is limited in length
  * to 63 bytes, the name characters are output as hex digits wrapped in []
diff --git a/pngget.c b/pngget.c
index 6891b51..37e9bb9 100644
--- a/pngget.c
+++ b/pngget.c
@@ -1,12 +1,12 @@
 
 /* pngget.c - retrieval of values from info struct
  *
- * libpng 1.0.1c
+ * libpng 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  */
 
 #define PNG_INTERNAL
diff --git a/pngmem.c b/pngmem.c
index 2b3d271..47880e9 100644
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,12 +1,12 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * libpng 1.0.1c
+ * libpng 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  *
  * This file provides a location for all memory allocation.  Users who
  * need special memory handling are expected to modify the code in this file
@@ -72,7 +72,7 @@
  * have the ability to do that.
  *
  * Borland seems to have a problem in DOS mode for exactly 64K.
- * It gives you a segment with an offset of 8 (perhaps to store it's
+ * It gives you a segment with an offset of 8 (perhaps to store its
  * memory stuff).  zlib doesn't like this at all, so we have to
  * detect and deal with it.  This code should not be needed in
  * Windows or OS/2 modes, and only in 16 bit mode.  This code has
diff --git a/pngpread.c b/pngpread.c
index e3f0d7a..22168b7 100644
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,12 +1,12 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * 1.0.1c
+ * 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  */
 
 #define PNG_INTERNAL
@@ -1070,7 +1070,7 @@
 #endif
 
 /* This function is called when we haven't found a handler for this
- * chunk.  In the future we will have code here which can handle
+ * chunk.  In the future we will have code here that can handle
  * user-defined callback functions for unknown chunks before they are
  * ignored or cause an error.  If there isn't a problem with the
  * chunk itself (ie a bad chunk name or a critical chunk), the chunk
diff --git a/pngread.c b/pngread.c
index f2ece96..0d36198 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1,12 +1,12 @@
 
 /* pngread.c - read a PNG file
  *
- * 1.0.1c
+ * 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  *
  * This file contains routines that an application calls directly to
  * read a PNG file or stream.
@@ -520,7 +520,7 @@
    /* save jump buffer and error functions */
    rp = row;
    dp = display_row;
-   if(rp != NULL && dp != NULL)
+   if (rp != NULL && dp != NULL)
       for (i = 0; i < num_rows; i++)
       {
          png_bytep rptr = *rp++;
@@ -528,25 +528,19 @@
    
          png_read_row(png_ptr, rptr, dptr);
       }
-   else
+   else if(rp != NULL)
       for (i = 0; i < num_rows; i++)
       {
-         png_bytep rptr;
-         png_bytep dptr;
-   
-         if (rp != NULL)
-            rptr = *rp;
-         else
-            rptr = NULL;
-         if (dp != NULL)
-            dptr = *dp;
-         else
-            dptr = NULL;
-         png_read_row(png_ptr, rptr, dptr);
-         if (row != NULL)
-            rp++;
-         if (display_row != NULL)
-            dp++;
+         png_bytep rptr = *rp;
+         png_read_row(png_ptr, rptr, NULL);
+         rp++;
+      }
+   else if(dp != NULL)
+      for (i = 0; i < num_rows; i++)
+      {
+         png_bytep dptr = *dp;
+         png_read_row(png_ptr, NULL, dptr);
+         dp++;
       }
 }
 
diff --git a/pngrio.c b/pngrio.c
index df84ca7..a17c64d 100644
--- a/pngrio.c
+++ b/pngrio.c
@@ -1,17 +1,17 @@
 
 /* pngrio.c - functions for data input
  *
- * libpng 1.0.1c
+ * libpng 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  *
- * This file provides a location for all input.  Users which need
- * special handling are expected to write a function which has the same
- * arguments as this, and perform a similar function, but possibly has
- * a different input method.  Note that you shouldn't change this
+ * This file provides a location for all input.  Users who need
+ * special handling are expected to write a function that has the same
+ * arguments as this and performs a similar function, but that possibly
+ * has a different input method.  Note that you shouldn't change this
  * function, but rather write a replacement function and then make
  * libpng use it at run time with png_set_read_fn(...).
  */
@@ -35,7 +35,7 @@
 }
 
 #if !defined(PNG_NO_STDIO)
-/* This is the function which does the actual reading of data.  If you are
+/* This is the function that does the actual reading of data.  If you are
    not reading from a standard C stream, you should create a replacement
    read_data function and use it at run time with png_set_read_fn(), rather
    than changing the library. */
@@ -114,10 +114,10 @@
    png_ptr      - pointer to a png input data structure
    io_ptr       - pointer to user supplied structure containing info about
                   the input functions.  May be NULL.
-   read_data_fn - pointer to a new input function which takes as it's
+   read_data_fn - pointer to a new input function that takes as its
                   arguments a pointer to a png_struct, a pointer to
                   a location where input data can be stored, and a 32-bit
-                  unsigned int which is the number of bytes to be read.
+                  unsigned int that is the number of bytes to be read.
                   To exit and output any fatal error messages the new write
                   function should call png_error(png_ptr, "Error msg"). */
 void
diff --git a/pngrtran.c b/pngrtran.c
index 6449ba8..fd2cc22 100644
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,16 +1,16 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * 1.0.1c
+ * 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  *
  * This file contains functions optionally called by an application 
  * in order to tell libpng how to handle data when reading a PNG.
- * Transformations which are used in both reading and writing are
+ * Transformations that are used in both reading and writing are
  * in pngtrans.c.
  */
 
@@ -208,11 +208,11 @@
          /* swap the palette around, and set up a table, if necessary */
          if (full_dither)
          {
-            int j;
+            int j = num_palette;
 
             /* put all the useful colors within the max, but don't
                move the others */
-            for (i = 0, j = num_palette; i < maximum_colors; i++)
+            for (i = 0; i < maximum_colors; i++)
             {
                if ((int)sort[i] >= maximum_colors)
                {
@@ -225,11 +225,11 @@
          }
          else
          {
-            int j;
+            int j = num_palette;
 
             /* move all the used colors inside the max limit, and
                develop a translation table */
-            for (i = 0, j = num_palette; i < maximum_colors; i++)
+            for (i = 0; i < maximum_colors; i++)
             {
                /* only move the colors we need to */
                if ((int)sort[i] >= maximum_colors)
@@ -576,16 +576,19 @@
 void
 png_init_read_transformations(png_structp png_ptr)
 {
-#if defined(PNG_USELESS_TESTS_SUPPORTED)
-   if(png_ptr == NULL) return;
-#endif
-
    png_debug(1, "in png_init_read_transformations\n");
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
+   if(png_ptr != NULL)
+#endif
+  {
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || defined(PNG_READ_SHIFT_SUPPORTED) \
+ || defined(PNG_READ_GAMMA_SUPPORTED)
+   int color_type = png_ptr->color_type;
+#endif
 
 #if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED)
    if (png_ptr->transformations & PNG_BACKGROUND_EXPAND)
    {
-      int color_type = png_ptr->color_type;
       if (!(color_type & PNG_COLOR_MASK_COLOR))  /* i.e., GRAY or GRAY_ALPHA */
       {
          /* expand background chunk. */
@@ -881,6 +884,7 @@
       }
    }
 #endif
+ }
 }
 
 /* Modify the info structure to reflect the transformations.  The
@@ -1334,19 +1338,20 @@
          }
          case 4:
          {
-            png_bytep bp;
+            png_bytep bp = row;
             png_uint_32 i;
             png_uint_32 istop = row_info->rowbytes;
             png_byte mask = (png_byte)(((int)0xf0 >> shift[0]) & (int)0xf0) |
                (png_byte)((int)0xf >> shift[0]);
 
-            for (bp = row, i = 0; i < istop; i++)
+            for (i = 0; i < istop; i++)
             {
                *bp >>= shift[0];
                *bp++ &= mask;
             }
             break;
          }
+#ifndef PNG_SLOW_SHIFT
          case 8:
          {
             png_bytep bp = row;
@@ -1374,6 +1379,43 @@
             }
             break;
          }
+#else
+         case 8:
+         {
+            png_bytep bp;
+            png_uint_32 i;
+            int cstop;
+
+            cstop=(int)row_info->channels;
+            for (bp = row, i = 0; i < row_width; i++)
+            {
+               for (c = 0; c < cstop; c++, bp++)
+               {
+                  *bp >>= shift[c];
+               }
+            }
+            break;
+         }
+         case 16:
+         {
+            png_bytep bp;
+            png_size_t i;
+            int cstop;
+
+            cstop=(int)row_info->channels;
+            for (bp = row, i = 0; i < row_width; i++)
+            {
+               for (c = 0; c < cstop; c++, bp += 2)
+               {
+                  value = (png_uint_16)((*bp << 8) + *(bp + 1));
+                  value >>= shift[c];
+                  *bp = (png_byte)(value >> 8);
+                  *(bp + 1) = (png_byte)(value & 0xff);
+               }
+            }
+            break;
+         }
+#endif
       }
    }
 }
diff --git a/pngrutil.c b/pngrutil.c
index 428188b..b476eb7 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,14 +1,14 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * 1.0.1c
+ * 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  *
- * This file contains routines which are only called from within
+ * This file contains routines that are only called from within
  * libpng itself during the course of reading an image.
  */
 
@@ -16,7 +16,7 @@
 #include "png.h"
 
 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
-/* Grab an unsigned 32-bit integer from a buffer in big endian format. */
+/* Grab an unsigned 32-bit integer from a buffer in big-endian format. */
 png_uint_32
 png_get_uint_32(png_bytep buf)
 {
@@ -29,7 +29,7 @@
 }
 
 #if defined(PNG_READ_pCAL_SUPPORTED)
-/* Grab a signed 32-bit integer from a buffer in big endian format.  The
+/* Grab a signed 32-bit integer from a buffer in big-endian format.  The
  * data is stored in the PNG file in two's complement format, and it is
  * assumed that the machine format for signed integers is the same. */
 png_int_32
@@ -44,7 +44,7 @@
 }
 #endif /* PNG_READ_pCAL_SUPPORTED */
 
-/* Grab an unsigned 16-bit integer from a buffer in big endian format. */
+/* Grab an unsigned 16-bit integer from a buffer in big-endian format. */
 png_uint_16
 png_get_uint_16(png_bytep buf)
 {
@@ -1724,7 +1724,7 @@
                 s_inc = 1;
             }
 
-            for (i = row_info->width; i; i--)
+            for (i = 0; i < row_info->width; i++)
             {
                v = (png_byte)((*sp >> sshift) & 0x1);
                for (j = 0; j < jstop; j++)
@@ -1777,7 +1777,7 @@
                s_inc = 2;
             }
 
-            for (i = row_info->width; i; i--)
+            for (i = 0; i < row_info->width; i++)
             {
                png_byte v;
                int j;
@@ -1833,7 +1833,7 @@
                s_inc = 4;
             }
 
-            for (i = row_info->width; i; i--)
+            for (i = 0; i < row_info->width; i++)
             {
                png_byte v = (png_byte)((*sp >> sshift) & 0xf);
                int j;
@@ -1868,7 +1868,7 @@
             int jstop = png_pass_inc[pass];
             png_uint_32 i;
 
-            for (i = row_info->width; i; i--)
+            for (i = 0; i < row_info->width; i++)
             {
                png_byte v[8];
                int j;
@@ -1914,7 +1914,8 @@
 
          for (i = bpp; i < istop; i++)
          {
-            *rp++ = (png_byte)(((int)(*rp) + (int)(*lp++)) & 0xff);
+            *rp = (png_byte)(((int)(*rp) + (int)(*lp++)) & 0xff);
+            rp++;
          }
          break;
       }
@@ -1927,7 +1928,8 @@
 
          for (i = 0; i < istop; i++)
          {
-            *rp++ = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
+            *rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
+            rp++;
          }
          break;
       }
@@ -1938,18 +1940,20 @@
          png_bytep pp = prev_row;
          png_bytep lp = row;
          png_uint_32 bpp = (row_info->pixel_depth + 7) / 8;
-         png_uint_32 istop = row_info->rowbytes;
+         png_uint_32 istop = row_info->rowbytes - bpp;
 
          for (i = 0; i < bpp; i++)
          {
-            *rp++ = (png_byte)(((int)(*rp) +
+            *rp = (png_byte)(((int)(*rp) +
                ((int)(*pp++) / 2)) & 0xff);
+            rp++;
          }
         
-         for (lp = row; i < istop; i++)
+         for (i = 0; i < istop; i++)
          {
-            *rp++ = (png_byte)(((int)(*rp) +
+            *rp = (png_byte)(((int)(*rp) +
                (int)(*pp++ + *lp++) / 2) & 0xff);
+            rp++;
          }
          break;
       }
@@ -1961,14 +1965,15 @@
          png_bytep lp = row;
          png_bytep cp = prev_row;
          png_uint_32 bpp = (row_info->pixel_depth + 7) / 8;
-         png_uint_32 istop=row_info->rowbytes;
+         png_uint_32 istop=row_info->rowbytes - bpp;
 
          for (i = 0; i < bpp; i++)
          {
-            *rp++ = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
+            *rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
+            rp++;
          }
 
-         for ( ; i < istop; i++)   /* use leftover i,rp,pp */
+         for (i = 0; i < istop; i++)   /* use leftover rp,pp */
          {
             int a, b, c, pa, pb, pc, p;
 
@@ -2000,7 +2005,8 @@
 
             p = (pa <= pb && pa <=pc) ? a : (pb <= pc) ? b : c;
 
-            *rp++ = (png_byte)(((int)(*rp) + p) & 0xff);
+            *rp = (png_byte)(((int)(*rp) + p) & 0xff);
+            rp++;
          }
          break;
       }
diff --git a/pngset.c b/pngset.c
index d186d18..0551178 100644
--- a/pngset.c
+++ b/pngset.c
@@ -1,12 +1,12 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * 1.0.1c
+ * 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  *
  * The functions here are used during reads to store data from the file
  * into the info struct, and during writes to store application data
diff --git a/pngtest.c b/pngtest.c
index 85ffce2..fed8e9c 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,12 +1,12 @@
 
 /* pngtest.c - a simple test program to test libpng
  *
- * libpng 1.0.1c
+ * libpng 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  *
  * This program reads in a PNG image, writes it out again, and then
  * compares the two files.  If the files are identical, this shows that
@@ -180,7 +180,7 @@
 /* START of code to validate stdio-free compilation */
 /* These copies of the default read/write functions come from pngrio.c and */
 /* pngwio.c.  They allow "don't include stdio" testing of the library. */
-/* This is the function which does the actual reading of data.  If you are
+/* This is the function that does the actual reading of data.  If you are
    not reading from a standard C stream, you should create a replacement
    read_data function and use it at run time with png_set_read_fn(), rather
    than changing the library. */
@@ -262,7 +262,7 @@
 }
 #endif
 
-/* This is the function which does the actual writing of data.  If you are
+/* This is the function that does the actual writing of data.  If you are
    not writing to a standard C stream, you should create a replacement
    write_data function and use it at run time with png_set_write_fn(), rather
    than changing the library. */
@@ -352,8 +352,8 @@
 png_default_error(png_structp png_ptr, png_const_charp message)
 {
    png_default_warning(png_ptr, message);
-   /* We can return because png_error calls the default handler which is
-    * actually ok in this case. */
+   /* We can return because png_error calls the default handler, which is
+    * actually OK in this case. */
 }
 #endif /* PNG_NO_STDIO */
 /* END of code to validate stdio-free compilation */
@@ -439,7 +439,7 @@
             if (current_allocation < 0)
                fprintf(STDERR, "Duplicate free of memory\n");
             /* We must free the list element too, but first kill
-               the memory which is to be freed. */
+               the memory that is to be freed. */
             memset(ptr, 0x55, pinfo->size);
             png_debug_free(png_ptr, pinfo);
             break;
diff --git a/pngtrans.c b/pngtrans.c
index 85e9561..327f6ee 100644
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,12 +1,12 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * 1.0.1c
+ * 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  */
 
 #define PNG_INTERNAL
@@ -87,8 +87,8 @@
 #if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
 /* Add a filler byte on read, or remove a filler or alpha byte on write.
  * The filler type has changed in v0.95 to allow future 2-byte fillers
- * for 48-bit input data, as well as avoiding problems with some compilers
- * which don't like bytes as parameters.
+ * for 48-bit input data, as well as to avoid problems with some compilers
+ * that don't like bytes as parameters.
  */
 void
 png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
@@ -148,7 +148,8 @@
 
       for (i = 0; i < istop; i++)
       {
-         *rp++ = (png_byte)(~(*rp));
+         *rp = (png_byte)(~(*rp));
+         rp++;
       }
    }
 }
diff --git a/pngwio.c b/pngwio.c
index a7ac6b0..917c38f 100644
--- a/pngwio.c
+++ b/pngwio.c
@@ -1,17 +1,17 @@
 
 /* pngwio.c - functions for data output
  *
- * libpng 1.0.1c
+ * libpng 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  *
- * This file provides a location for all output.  Users which need
- * special handling are expected to write functions which have the same
- * arguments as these, and perform similar functions, but possibly use
- * different output methods.  Note that you shouldn't change these
+ * This file provides a location for all output.  Users who need
+ * special handling are expected to write functions that have the same
+ * arguments as these and perform similar functions, but that possibly
+ * use different output methods.  Note that you shouldn't change these
  * functions, but rather write replacement functions and then change
  * them at run time with png_set_write_fn(...).
  */
@@ -35,7 +35,7 @@
 }
 
 #if !defined(PNG_NO_STDIO)
-/* This is the function which does the actual writing of data.  If you are
+/* This is the function that does the actual writing of data.  If you are
    not writing to a standard C stream, you should create a replacement
    write_data function and use it at run time with png_set_write_fn(), rather
    than changing the library. */
@@ -133,13 +133,13 @@
    png_ptr       - pointer to a png output data structure
    io_ptr        - pointer to user supplied structure containing info about
                    the output functions.  May be NULL.
-   write_data_fn - pointer to a new output function which takes as its
+   write_data_fn - pointer to a new output function that takes as its
                    arguments a pointer to a png_struct, a pointer to
-                   data to be written, and a 32-bit unsigned int which is
+                   data to be written, and a 32-bit unsigned int that is
                    the number of bytes to be written.  The new write
                    function should call png_error(png_ptr, "Error msg")
                    to exit and output any fatal error messages.
-   flush_data_fn - pointer to a new flush function which takes as its
+   flush_data_fn - pointer to a new flush function that takes as its
                    arguments a pointer to a png_struct.  After a call to
                    the flush function, there should be no data in any buffers
                    or pending transmission.  If the output method doesn't do
diff --git a/pngwrite.c b/pngwrite.c
index 59a2f39..02ee7b0 100644
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,12 +1,12 @@
    
 /* pngwrite.c - general routines to write a PNG file
  *
- * 1.0.1c
+ * 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  */
 
 /* get internal access to png.h */
@@ -824,9 +824,7 @@
    int num_weights, png_doublep filter_weights,
    png_doublep filter_costs)
 {
-#if defined(PNG_WRITE_tEXt_SUPPORTED) || defined(PNG_WRITE_zTXt_SUPPORTED)
    int i;
-#endif
 
    png_debug(1, "in png_set_filter_heuristics\n");
    if (heuristic_method >= PNG_FILTER_HEURISTIC_LAST)
diff --git a/pngwtran.c b/pngwtran.c
index fc1ba7c..3b43996 100644
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,12 +1,12 @@
 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * 1.0.1c
+ * 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  */
 
 #define PNG_INTERNAL
diff --git a/pngwutil.c b/pngwutil.c
index ee5e6dc..8e0dc21 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,12 +1,12 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * 1.0.1c
+ * 1.0.1d
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  * Copyright (c) 1996, 1997 Andreas Dilger
  * Copyright (c) 1998, Glenn Randers-Pehrson
- * May 9, 1998
+ * May 21, 1998
  */
 
 #define PNG_INTERNAL
@@ -766,7 +766,7 @@
    }
 
    /* We can't write the chunk until we find out how much data we have,
-    * which means we need to run the compressor first, and save the
+    * which means we need to run the compressor first and save the
     * output.  This shouldn't be a problem, as the vast majority of
     * comments should be reasonable, but we will set up an array of
     * malloc'd pointers to be sure.
@@ -1412,7 +1412,7 @@
 
    /* The prediction method we use is to find which method provides the
     * smallest value when summing the absolute values of the distances
-    * from zero using anything >= 128 as negative numbers.  This is known
+    * from zero, using anything >= 128 as negative numbers.  This is known
     * as the "minimum sum of absolute differences" heuristic.  Other
     * heuristics are the "weighted minimum sum of absolute differences"
     * (experimental and can in theory improve compression), and the "zlib
diff --git a/scripts/makefile.lnx b/scripts/makefile.lnx
index 0c149e7..33351cf 100644
--- a/scripts/makefile.lnx
+++ b/scripts/makefile.lnx
@@ -29,7 +29,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.1c
+PNGMIN = 1.0.1d
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # where make install puts libpng.a, libpng.so*, and png.h
diff --git a/scripts/makefile.s2x b/scripts/makefile.s2x
index afa03a5..167828c 100644
--- a/scripts/makefile.s2x
+++ b/scripts/makefile.s2x
@@ -29,7 +29,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.1c
+PNGMIN = 1.0.1d
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # where make install puts libpng.a, libpng.so*, and png.h
diff --git a/scripts/makefile.sco b/scripts/makefile.sco
index 36568de..65d5fb2 100644
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -22,7 +22,7 @@
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.1c
+PNGMIN = 1.0.1d
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # where make install puts libpng.a, libpng.so*, and png.h
diff --git a/scripts/pngdef.pas b/scripts/pngdef.pas
new file mode 100644
index 0000000..7c9acb5
--- /dev/null
+++ b/scripts/pngdef.pas
@@ -0,0 +1,708 @@
+unit pngdef;
+
+interface
+
+const
+  PNG_LIBPNG_VER_STRING = '1.0.1d';
+  PNG_LIBPNG_VER        =  10001;
+
+type
+  png_uint_32 = Cardinal;
+  png_int_32  = Longint;
+  png_uint_16 = Word;
+  png_int_16  = Smallint;
+  png_byte    = Byte;
+  png_size_t  = png_uint_32;
+  png_charpp  = ^png_charp;
+  png_charp   = PChar;
+  float       = single;
+  int         = Integer;
+  png_bytepp  = ^png_bytep;
+  png_bytep   = ^png_byte;
+  png_uint_16p = ^png_uint_16;
+  png_uint_16pp = ^png_uint_16p;
+  png_voidp    = pointer;
+  time_t       = Longint;
+  png_doublep  = ^png_double;
+  png_double   = double;
+
+  user_error_ptr  = Pointer;
+  png_error_ptrp = ^png_error_ptr;
+  png_error_ptr  = procedure(png_ptr: Pointer; msg: Pointer);
+             stdcall;
+  png_rw_ptrp = ^png_rw_ptr;
+  png_rw_ptr = procedure(png_ptr: Pointer; data: Pointer;
+                         length: png_size_t);
+             stdcall;
+  png_flush_ptrp = ^png_flush_ptr;
+  png_flush_ptr = procedure(png_ptr: Pointer);
+             stdcall;
+  png_progressive_info_ptrp = ^png_progressive_info_ptr;
+  png_progressive_info_ptr  = procedure(png_ptr: Pointer;
+                                        info_ptr: Pointer);
+             stdcall;
+  png_progressive_end_ptrp  = ^png_progressive_end_ptr;
+  png_progressive_end_ptr   = procedure(png_ptr: Pointer;
+                                        info_ptr: Pointer);
+             stdcall;
+  png_progressive_row_ptrp  = ^png_progressive_row_ptr;
+  png_progressive_row_ptr   = procedure(png_ptr: Pointer;
+                                data: Pointer; length: png_uint_32;
+                                count: int);
+             stdcall;
+  png_read_status_ptr = procedure(png_ptr: Pointer;
+                          row_number: png_uint_32; pass: int);
+             stdcall;
+  png_write_status_ptr = procedure(png_ptr: Pointer;
+                           row_number: png_uint_32; pass: int);
+             stdcall;
+  png_user_transform_ptr = procedure(png_ptr: Pointer;
+                             row_info: Pointer; data: png_bytep);
+             stdcall;
+
+  png_colorpp = ^png_colorp;
+  png_colorp = ^png_color;
+  png_color = packed record
+    red, green, blue: png_byte;
+    end;
+
+  png_color_16pp = ^png_color_16p;
+  png_color_16p = ^png_color_16;
+  png_color_16 = packed record
+    index: png_byte;                 //used for palette files
+    red, green, blue: png_uint_16;   //for use in red green blue files
+    gray: png_uint_16;               //for use in grayscale files
+    end;
+
+  png_color_8pp = ^png_color_8p;
+  png_color_8p = ^png_color_8;
+  png_color_8 = packed record
+    red, green, blue: png_byte;   //for use in red green blue files
+    gray: png_byte;               //for use in grayscale files
+    alpha: png_byte;              //for alpha channel files
+    end;
+
+  png_textpp = ^png_textp;
+  png_textp = ^png_text;
+  png_text = packed record
+    compression: int;            //compression value
+    key: png_charp;              //keyword, 1-79 character description of "text"
+    text: png_charp;             //comment, may be empty ("")
+    text_length: png_size_t;     //length of text field
+    end;
+
+  png_timepp = ^png_timep;
+  png_timep = ^png_time;
+  png_time = packed record
+    year: png_uint_16;           //yyyy
+    month: png_byte;             //1..12
+    day: png_byte;               //1..31
+    hour: png_byte;              //0..23
+    minute: png_byte;            //0..59
+    second: png_byte;            //0..60 (leap seconds)
+    end;
+
+  png_infopp = ^png_infop;
+  png_infop = Pointer;
+
+  png_row_infopp = ^png_row_infop;
+  png_row_infop = ^png_row_info;
+  png_row_info = packed record
+    width: png_uint_32;          //width of row
+    rowbytes: png_size_t;        //number of bytes in row
+    color_type: png_byte;        //color type of row
+    bit_depth: png_byte;         //bit depth of row
+    channels: png_byte;          //number of channels (1, 2, 3, or 4)
+    pixel_depth: png_byte;       //bits per pixel (depth * channels)
+    end;
+
+  png_structpp = ^png_structp;
+  png_structp = Pointer;
+
+const
+
+// Supported compression types for text in PNG files (tEXt, and zTXt).
+// The values of the PNG_TEXT_COMPRESSION_ defines should NOT be changed.
+
+  PNG_TEXT_COMPRESSION_NONE_WR = -3;
+  PNG_TEXT_COMPRESSION_zTXt_WR = -2;
+  PNG_TEXT_COMPRESSION_NONE    = -1;
+  PNG_TEXT_COMPRESSION_zTXt    = 0;
+
+// These describe the color_type field in png_info.
+// color type masks
+
+  PNG_COLOR_MASK_PALETTE   = 1;
+  PNG_COLOR_MASK_COLOR     = 2;
+  PNG_COLOR_MASK_ALPHA     = 4;
+
+// color types.  Note that not all combinations are legal
+
+  PNG_COLOR_TYPE_GRAY       = 0;
+  PNG_COLOR_TYPE_PALETTE    = PNG_COLOR_MASK_COLOR or
+                              PNG_COLOR_MASK_PALETTE;
+  PNG_COLOR_TYPE_RGB        = PNG_COLOR_MASK_COLOR;
+  PNG_COLOR_TYPE_RGB_ALPHA  = PNG_COLOR_MASK_COLOR or
+                              PNG_COLOR_MASK_ALPHA;
+  PNG_COLOR_TYPE_GRAY_ALPHA = PNG_COLOR_MASK_ALPHA;
+
+// This is for compression type. PNG 1.0 only defines the single type.
+
+  PNG_COMPRESSION_TYPE_BASE    = 0;   // Deflate method 8, 32K window
+  PNG_COMPRESSION_TYPE_DEFAULT = PNG_COMPRESSION_TYPE_BASE;
+
+// This is for filter type. PNG 1.0 only defines the single type.
+
+  PNG_FILTER_TYPE_BASE    = 0;       // Single row per-byte filtering
+  PNG_FILTER_TYPE_DEFAULT = PNG_FILTER_TYPE_BASE;
+
+// These are for the interlacing type.  These values should NOT be changed.
+
+  PNG_INTERLACE_NONE  = 0;      // Non-interlaced image
+  PNG_INTERLACE_ADAM7 = 1;      // Adam7 interlacing
+
+// These are for the oFFs chunk.  These values should NOT be changed.
+
+  PNG_OFFSET_PIXEL      = 0;    // Offset in pixels
+  PNG_OFFSET_MICROMETER = 1;    // Offset in micrometers (1/10^6 meter)
+
+// These are for the pCAL chunk.  These values should NOT be changed.
+
+  PNG_EQUATION_LINEAR     = 0;  // Linear transformation
+  PNG_EQUATION_BASE_E     = 1;  // Exponential base e transform
+  PNG_EQUATION_ARBITRARY  = 2;  // Arbitrary base exponential transform
+  PNG_EQUATION_HYPERBOLIC = 3;  // Hyperbolic sine transformation
+
+// These are for the pHYs chunk.  These values should NOT be changed.
+
+  PNG_RESOLUTION_UNKNOWN = 0;   // pixels/unknown unit (aspect ratio)
+  PNG_RESOLUTION_METER   = 1;   // pixels/meter
+
+// These are for the sRGB chunk.  These values should NOT be changed.
+  PNG_sRGB_INTENT_SATURATION = 0;
+  PNG_sRGB_INTENT_PERCEPTUAL = 1;
+  PNG_sRGB_INTENT_ABSOLUTE   = 2;
+  PNG_sRGB_INTENT_RELATIVE   = 3;
+
+// Handle alpha and tRNS by replacing with a background color.
+  PNG_BACKGROUND_GAMMA_UNKNOWN = 0;
+  PNG_BACKGROUND_GAMMA_SCREEN  = 1;
+  PNG_BACKGROUND_GAMMA_FILE    = 2;
+  PNG_BACKGROUND_GAMMA_UNIQUE  = 3;
+
+// Values for png_set_crc_action() to say how to handle CRC errors in
+// ancillary and critical chunks, and whether to use the data contained
+// therein.  Note that it is impossible to "discard" data in a critical
+// chunk.  For versions prior to 0.90, the action was always error/quit,
+// whereas in version 0.90 and later, the action for CRC errors in ancillary
+// chunks is warn/discard.  These values should NOT be changed.
+
+//      value                   action:critical     action:ancillary
+
+  PNG_CRC_DEFAULT      = 0;  // error/quit          warn/discard data
+  PNG_CRC_ERROR_QUIT   = 1;  // error/quit          error/quit
+  PNG_CRC_WARN_DISCARD = 2;  // (INVALID)           warn/discard data
+  PNG_CRC_WARN_USE     = 3;  // warn/use data       warn/use data
+  PNG_CRC_QUIET_USE    = 4;  // quiet/use data      quiet/use data
+  PNG_CRC_NO_CHANGE    = 5;  // use current value   use current value 
+
+// Flags for png_set_filter() to say which filters to use.  The flags
+// are chosen so that they don't conflict with real filter types
+// below, in case they are supplied instead of the #defined constants.
+// These values should NOT be changed.
+
+  PNG_NO_FILTERS   = $00;
+  PNG_FILTER_NONE  = $08;
+  PNG_FILTER_SUB   = $10;
+  PNG_FILTER_UP    = $20;
+  PNG_FILTER_AVG   = $40;
+  PNG_FILTER_PAETH = $80;
+  PNG_ALL_FILTERS  = PNG_FILTER_NONE or PNG_FILTER_SUB or
+                     PNG_FILTER_UP   or PNG_FILTER_AVG or
+                     PNG_FILTER_PAETH;
+
+// Filter values (not flags) - used in pngwrite.c, pngwutil.c for now.
+// These defines should NOT be changed.
+
+  PNG_FILTER_VALUE_NONE  = 0;
+  PNG_FILTER_VALUE_SUB   = 1;
+  PNG_FILTER_VALUE_UP    = 2;
+  PNG_FILTER_VALUE_AVG   = 3;
+  PNG_FILTER_VALUE_PAETH = 4;
+
+// Heuristic used for row filter selection.  These defines should NOT be
+// changed.
+
+  PNG_FILTER_HEURISTIC_DEFAULT    = 0;  // Currently "UNWEIGHTED"
+  PNG_FILTER_HEURISTIC_UNWEIGHTED = 1;  // Used by libpng < 0.95
+  PNG_FILTER_HEURISTIC_WEIGHTED   = 2;  // Experimental feature
+  PNG_FILTER_HEURISTIC_LAST       = 3;  // Not a valid value 
+
+procedure png_build_grayscale_palette(bit_depth: int; palette: png_colorp);
+             stdcall;
+function png_check_sig(sig: png_bytep; num: int): int;
+             stdcall;
+procedure png_chunk_error(png_ptr: png_structp;
+             const mess: png_charp);
+             stdcall;
+procedure png_chunk_warning(png_ptr: png_structp;
+             const mess: png_charp);
+             stdcall;
+procedure png_convert_from_time_t(ptime: png_timep; ttime: time_t);
+             stdcall;
+function png_convert_to_rfc1123(png_ptr: png_structp; ptime: png_timep):
+             png_charp;
+             stdcall;
+function png_create_info_struct(png_ptr: png_structp): png_infop;
+             stdcall;
+function png_create_read_struct(user_png_ver: png_charp;
+             error_ptr: user_error_ptr; error_fn: png_error_ptr;
+             warn_fn: png_error_ptr): png_structp;
+             stdcall;
+function png_create_write_struct(user_png_ver: png_charp;
+             error_ptr: user_error_ptr; error_fn: png_error_ptr;
+             warn_fn: png_error_ptr): png_structp;
+             stdcall;
+procedure png_destroy_info_struct(png_ptr: png_structp;
+             info_ptr_ptr: png_infopp);
+             stdcall;
+procedure png_destroy_read_struct(png_ptr_ptr: png_structpp;
+             info_ptr_ptr, end_info_ptr_ptr: png_infopp);
+             stdcall;
+procedure png_destroy_write_struct(png_ptr_ptr: png_structpp;
+             info_ptr_ptr: png_infopp);
+             stdcall;
+function png_get_IHDR(png_ptr: png_structp; info_ptr: png_infop;
+             var width, height: png_uint_32; var bit_depth,
+             color_type, interlace_type, compression_type,
+             filter_type: int): png_uint_32;
+             stdcall;
+function png_get_PLTE(png_ptr: png_structp; info_ptr: png_infop;
+             var palette: png_colorp; var num_palette: int):
+             png_uint_32;
+             stdcall;
+function png_get_bKGD(png_ptr: png_structp; info_ptr: png_infop;
+             var background: png_color_16p): png_uint_32;
+             stdcall;
+function png_get_bit_depth(png_ptr: png_structp; info_ptr: png_infop):
+             png_byte;
+             stdcall;
+function png_get_cHRM(png_ptr: png_structp; info_ptr: png_infop;
+             var white_x, white_y, red_x, red_y, green_x, green_y,
+             blue_x, blue_y: double): png_uint_32;
+             stdcall;
+function png_get_channels(png_ptr: png_structp; info_ptr: png_infop):
+             png_byte;
+             stdcall;
+function png_get_color_type(png_ptr: png_structp; info_ptr: png_infop):
+             png_byte;
+             stdcall;
+function png_get_compression_type(png_ptr: png_structp;
+             info_ptr: png_infop): png_byte;
+             stdcall;
+function png_get_error_ptr(png_ptr: png_structp): png_voidp;
+             stdcall;
+function png_get_filter_type(png_ptr: png_structp; info_ptr: png_infop):
+             png_byte;
+             stdcall;
+function png_get_gAMA(png_ptr: png_structp; info_ptr: png_infop;
+             var file_gamma: double): png_uint_32;
+             stdcall;
+function png_get_hIST(png_ptr: png_structp; info_ptr: png_infop;
+             var hist: png_uint_16p): png_uint_32;
+             stdcall;
+function png_get_image_height(png_ptr: png_structp; info_ptr: png_infop):
+             png_uint_32;
+             stdcall;
+function png_get_image_width(png_ptr: png_structp; info_ptr: png_infop):
+             png_uint_32;
+             stdcall;
+function png_get_interlace_type(png_ptr: png_structp;
+             info_ptr: png_infop): png_byte;
+             stdcall;
+function png_get_io_ptr(png_ptr: png_structp): png_voidp;
+             stdcall;
+function png_get_oFFs(png_ptr: png_structp; info_ptr: png_infop;
+             var offset_x, offset_y: png_uint_32;
+             var unit_type: int): png_uint_32;
+             stdcall;
+function png_get_pCAL(png_ptr: png_structp; info_ptr: png_infop;
+             var purpose: png_charp; var X0, X1: png_int_32;
+             var typ, nparams: int; var units: png_charp;
+             var params: png_charpp): png_uint_32;
+             stdcall;
+function png_get_pHYs(png_ptr: png_structp; info_ptr: png_infop;
+             var res_x, res_y: png_uint_32; var unit_type: int):
+             png_uint_32;
+             stdcall;
+function png_get_pixel_aspect_ratio(png_ptr: png_structp;
+             info_ptr: png_infop): float;
+             stdcall;
+function png_get_pixels_per_meter(png_ptr: png_structp;
+             info_ptr: png_infop): png_uint_32;
+             stdcall;
+function png_get_progressive_ptr(png_ptr: png_structp): png_voidp;
+             stdcall;
+function png_get_rowbytes(png_ptr: png_structp; info_ptr: png_infop):
+             png_uint_32;
+             stdcall;
+function png_get_sBIT(png_ptr: png_structp; info_ptr: png_infop;
+             var sig_bits: png_color_8p): png_uint_32;
+             stdcall;
+function png_get_sRGB(png_ptr: png_structp; info_ptr: png_infop;
+             var file_srgb_intent: int): png_uint_32;
+             stdcall; 
+function png_get_signature(png_ptr: png_structp; info_ptr: png_infop):
+             png_bytep;
+             stdcall;
+function png_get_tIME(png_ptr: png_structp; info_ptr: png_infop;
+             var mod_time: png_timep): png_uint_32;
+             stdcall;
+function png_get_tRNS(png_ptr: png_structp; info_ptr: png_infop;
+             var trans: png_bytep; var num_trans: int;
+             var trans_values: png_color_16p): png_uint_32;
+             stdcall;
+function png_get_text(png_ptr: png_structp; info_ptr: png_infop;
+             var text_ptr: png_textp; var num_text: int):
+             png_uint_32;
+             stdcall;
+function png_get_valid(png_ptr: png_structp; info_ptr: png_infop;
+             flag: png_uint_32): png_uint_32;
+             stdcall;
+function png_get_x_offset_microns(png_ptr: png_structp;
+             info_ptr: png_infop): png_uint_32;
+             stdcall;
+function png_get_x_offset_pixels(png_ptr: png_structp;
+             info_ptr: png_infop): png_uint_32;
+             stdcall;
+function png_get_x_pixels_per_meter(png_ptr: png_structp;
+             info_ptr: png_infop): png_uint_32;
+             stdcall;
+function png_get_y_offset_microns(png_ptr: png_structp;
+             info_ptr: png_infop): png_uint_32;
+             stdcall;
+function png_get_y_offset_pixels(png_ptr: png_structp;
+             info_ptr: png_infop): png_uint_32;
+             stdcall;
+function png_get_y_pixels_per_meter(png_ptr: png_structp;
+             info_ptr: png_infop): png_uint_32;
+             stdcall;
+procedure png_process_data(png_ptr: png_structp; info_ptr: png_infop;
+             buffer: png_bytep; buffer_size: png_size_t);
+             stdcall;
+procedure png_progressive_combine_row(png_ptr: png_structp;
+             old_row, new_row: png_bytep);
+             stdcall;
+procedure png_read_end(png_ptr: png_structp; info_ptr: png_infop);
+              stdcall;
+procedure png_read_image(png_ptr: png_structp; image: png_bytepp);
+             stdcall;
+procedure png_read_info(png_ptr: png_structp; info_ptr: png_infop);
+             stdcall;
+procedure png_read_row(png_ptr: png_structp; row, dsp_row: png_bytep);
+             stdcall;
+procedure png_read_rows(png_ptr: png_structp; row, display_row:
+              png_bytepp; num_rows: png_uint_32);
+             stdcall;
+procedure png_read_update_info(png_ptr: png_structp; info_ptr: png_infop);
+             stdcall;
+procedure png_set_IHDR(png_ptr: png_structp; info_ptr: png_infop;
+             width, height: png_uint_32; bit_depth, color_type,
+             interlace_type, compression_type, filter_type: int);
+             stdcall;
+procedure png_set_PLTE(png_ptr: png_structp; info_ptr: png_infop;
+             palette: png_colorp; num_palette: int);
+             stdcall;
+procedure png_set_bKGD(png_ptr: png_structp; info_ptr: png_infop;
+             background: png_color_16p);
+             stdcall;
+procedure png_set_background(png_ptr: png_structp;
+             background_color: png_color_16p;
+             background_gamma_code, need_expand: int;
+             background_gamma: double);
+             stdcall;
+procedure png_set_bgr(png_ptr: png_structp);
+             stdcall;
+procedure png_set_cHRM(png_ptr: png_structp; info_ptr: png_infop;
+             white_x, white_y, red_x, red_y, green_x, green_y,
+             blue_x, blue_y: double);
+             stdcall;
+procedure png_set_compression_level(png_ptr: png_structp; level: int);
+             stdcall;
+procedure png_set_compression_mem_level(png_ptr: png_structp;
+             mem_level: int);
+             stdcall;
+procedure png_set_compression_method(png_ptr: png_structp; method: int);
+             stdcall;
+procedure png_set_compression_strategy(png_ptr: png_structp;
+             strategy: int);
+             stdcall;
+procedure png_set_compression_window_bits(png_ptr: png_structp;
+             window_bits: int);
+             stdcall;
+procedure png_set_crc_action(png_ptr: png_structp;
+             crit_action, ancil_action: int);
+             stdcall;
+procedure png_set_dither(png_ptr: png_structp; plaette: png_colorp;
+             num_palette, maximum_colors: int;
+             histogram: png_uint_16p; full_dither: int);
+             stdcall;
+procedure png_set_error_fn(png_ptr: png_structp; error_ptr: png_voidp;
+             error_fn, warning_fn: png_error_ptr);
+             stdcall;
+procedure png_set_expand(png_ptr: png_structp);
+             stdcall;
+procedure png_set_filler(png_ptr: png_structp; filler: png_uint_32;
+             filler_loc: int);
+             stdcall;
+procedure png_set_filter(png_ptr: png_structp; method, filters: int);
+             stdcall;
+procedure png_set_filter_heuristics(png_ptr: png_structp;
+             heuristic_method, num_weights: int;
+             filter_weights, filter_costs: png_doublep);
+             stdcall;
+procedure png_set_flush(png_ptr: png_structp; nrows: int);
+             stdcall;
+procedure png_set_gAMA(png_ptr: png_structp; info_ptr: png_infop;
+             file_gamma: double);
+             stdcall;
+procedure png_set_gamma(png_ptr: png_structp; screen_gamma,
+             default_file_gamma: double);
+             stdcall;
+procedure png_set_gray_to_rgb(png_ptr: png_structp);
+             stdcall;
+procedure png_set_hIST(png_ptr: png_structp; info_ptr: png_infop;
+             hist: png_uint_16p);
+             stdcall;
+function png_set_interlace_handling(png_ptr: png_structp): int;
+             stdcall;
+procedure png_set_invert_alpha(png_ptr: png_structp);
+             stdcall;
+procedure png_set_invert_mono(png_ptr: png_structp);
+             stdcall;
+procedure png_set_oFFs(png_ptr: png_structp; info_ptr: png_infop;
+             offset_x, offset_y: png_uint_32; unit_type: int);
+             stdcall;
+procedure png_set_pCAL(png_ptr: png_structp; info_ptr: png_infop;
+             purpose: png_charp; X0, X1: png_int_32;
+             typ, nparams: int; units: png_charp;
+             params: png_charpp);
+             stdcall;
+procedure png_set_pHYs(png_ptr: png_structp; info_ptr: png_infop;
+             res_x, res_y: png_uint_32; unit_type: int);
+             stdcall;
+procedure png_set_packing(png_ptr: png_structp);
+             stdcall;
+procedure png_set_packswap(png_ptr: png_structp);
+             stdcall;
+procedure png_set_progressive_read_fn(png_ptr: png_structp;
+             progressive_ptr: png_voidp;
+             info_fn: png_progressive_info_ptr;
+             row_fn: png_progressive_row_ptr;
+             end_fn: png_progressive_end_ptr);
+             stdcall;
+procedure png_set_read_fn(png_ptr: png_structp;
+             io_ptr: png_voidp; read_data_fn: png_rw_ptr);
+             stdcall;
+procedure png_set_read_status_fn(png_ptr: png_structp;
+             read_row_fn: png_read_status_ptr);
+             stdcall;
+procedure png_set_read_user_transform_fn(png_ptr: png_structp;
+             read_user_transform_fn: png_user_transform_ptr);
+             stdcall;
+procedure png_set_sBIT(png_ptr: png_structp; info_ptr: png_infop;
+             sig_bits: png_color_8p);
+             stdcall;
+procedure png_set_sRGB(png_ptr: png_structp; info_ptr: png_infop;
+             intent: int);
+             stdcall;
+procedure png_set_sRGB_gAMA_and_cHRM(png_ptr: png_structp;
+             info_ptr: png_infop; intent: int);
+             stdcall;
+procedure png_set_shift(png_ptr: png_structp; true_bits: png_color_8p);
+             stdcall;
+procedure png_set_sig_bytes(png_ptr: png_structp; num_bytes: int);
+             stdcall;
+procedure png_set_strip_16(png_ptr: png_structp);
+             stdcall;
+procedure png_set_strip_alpha(png_ptr: png_structp);
+             stdcall;
+procedure png_set_swap(png_ptr: png_structp);
+             stdcall;
+procedure png_set_swap_alpha(png_ptr: png_structp);
+             stdcall;
+procedure png_set_tIME(png_ptr: png_structp; info_ptr: png_infop;
+             mod_time: png_timep);
+             stdcall;
+procedure png_set_tRNS(png_ptr: png_structp; info_ptr: png_infop;
+             trans: png_bytep; num_trans: int;
+             trans_values: png_color_16p);
+             stdcall;
+procedure png_set_text(png_ptr: png_structp; info_ptr: png_infop;
+             text_ptr: png_textp; num_text: int);
+             stdcall;
+procedure png_set_write_fn(png_ptr: png_structp;
+             io_ptr: png_voidp; write_data_fn: png_rw_ptr;
+             output_flush_fn: png_flush_ptr);
+             stdcall;
+procedure png_set_write_status_fn(png_ptr: png_structp;
+             write_row_fn: png_write_status_ptr);
+             stdcall;
+procedure png_set_write_user_transform_fn(png_ptr: png_structp;
+             write_user_transform_fn: png_user_transform_ptr);
+             stdcall;
+function png_sig_cmp(sig: png_bytep; start, num_to_check: png_size_t):
+             int;
+             stdcall;
+procedure png_start_read_image(png_ptr: png_structp);
+             stdcall;
+procedure png_write_chunk(png_ptr: png_structp;
+             chunk_name, data: png_bytep; length: png_size_t);
+             stdcall;
+procedure png_write_chunk_data(png_ptr: png_structp;
+             data: png_bytep; length: png_size_t);
+             stdcall;
+procedure png_write_chunk_end(png_ptr: png_structp);
+             stdcall;
+procedure png_write_chunk_start(png_ptr: png_structp;
+             chunk_name: png_bytep; length: png_uint_32);
+             stdcall;
+procedure png_write_end(png_ptr: png_structp; info_ptr: png_infop);
+             stdcall;
+procedure png_write_flush(png_ptr: png_structp);
+             stdcall;
+procedure png_write_image(png_ptr: png_structp; image: png_bytepp);
+             stdcall;
+procedure png_write_info(png_ptr: png_structp; info_ptr: png_infop);
+             stdcall;
+procedure png_write_row(png_ptr: png_structp; row: png_bytep);
+             stdcall;
+procedure png_write_rows(png_ptr: png_structp; row: png_bytepp;
+             num_rows: png_uint_32);
+             stdcall;
+
+implementation
+
+const
+  pngDLL = 'png32bd.dll';
+
+procedure png_build_grayscale_palette; external pngDLL;
+function png_check_sig; external pngDLL;
+procedure png_chunk_error; external pngDLL;
+procedure png_chunk_warning; external pngDLL;
+procedure png_convert_from_time_t; external pngDLL;
+function png_convert_to_rfc1123; external pngDLL;
+function png_create_info_struct; external pngDLL;
+function png_create_read_struct; external pngDLL;
+function png_create_write_struct; external pngDLL;
+procedure png_destroy_info_struct; external pngDLL;
+procedure png_destroy_read_struct; external pngDLL;
+procedure png_destroy_write_struct; external pngDLL;
+function png_get_IHDR; external pngDLL;
+function png_get_PLTE; external pngDLL;
+function png_get_bKGD; external pngDLL;
+function png_get_bit_depth; external pngDLL;
+function png_get_cHRM; external pngDLL;
+function png_get_channels; external pngDLL;
+function png_get_color_type; external pngDLL;
+function png_get_compression_type; external pngDLL;
+function png_get_error_ptr; external pngDLL;
+function png_get_filter_type; external pngDLL;
+function png_get_gAMA; external pngDLL;
+function png_get_hIST; external pngDLL;
+function png_get_image_height; external pngDLL;
+function png_get_image_width; external pngDLL;
+function png_get_interlace_type; external pngDLL;
+function png_get_io_ptr; external pngDLL;
+function png_get_oFFs; external pngDLL;
+function png_get_pCAL; external pngDLL;
+function png_get_pHYs; external pngDLL;
+function png_get_pixel_aspect_ratio; external pngDLL;
+function png_get_pixels_per_meter; external pngDLL;
+function png_get_progressive_ptr; external pngDLL;
+function png_get_rowbytes; external pngDLL;
+function png_get_sBIT; external pngDLL;
+function png_get_sRGB; external pngDLL;
+function png_get_signature; external pngDLL;
+function png_get_tIME; external pngDLL;
+function png_get_tRNS; external pngDLL;
+function png_get_text; external pngDLL;
+function png_get_valid; external pngDLL;
+function png_get_x_offset_microns; external pngDLL;
+function png_get_x_offset_pixels; external pngDLL;
+function png_get_x_pixels_per_meter; external pngDLL;
+function png_get_y_offset_microns; external pngDLL;
+function png_get_y_offset_pixels; external pngDLL;
+function png_get_y_pixels_per_meter; external pngDLL;
+procedure png_process_data; external pngDLL;
+procedure png_progressive_combine_row; external pngDLL;
+procedure png_read_end; external pngDLL;
+procedure png_read_image; external pngDLL;
+procedure png_read_info; external pngDLL;
+procedure png_read_row; external pngDLL;
+procedure png_read_rows; external pngDLL;
+procedure png_read_update_info; external pngDLL;
+procedure png_set_IHDR; external pngDLL;
+procedure png_set_PLTE; external pngDLL;
+procedure png_set_bKGD; external pngDLL;
+procedure png_set_background; external pngDLL;
+procedure png_set_bgr; external pngDLL;
+procedure png_set_cHRM; external pngDLL;
+procedure png_set_compression_level; external pngDLL;
+procedure png_set_compression_mem_level; external pngDLL;
+procedure png_set_compression_method; external pngDLL;
+procedure png_set_compression_strategy; external pngDLL;
+procedure png_set_compression_window_bits; external pngDLL;
+procedure png_set_crc_action; external pngDLL;
+procedure png_set_dither; external pngDLL;
+procedure png_set_error_fn; external pngDLL;
+procedure png_set_expand; external pngDLL;
+procedure png_set_filler; external pngDLL;
+procedure png_set_filter; external pngDLL;
+procedure png_set_filter_heuristics; external pngDLL;
+procedure png_set_flush; external pngDLL;
+procedure png_set_gAMA; external pngDLL;
+procedure png_set_gamma; external pngDLL;
+procedure png_set_gray_to_rgb; external pngDLL;
+procedure png_set_hIST; external pngDLL;
+function png_set_interlace_handling; external pngDLL;
+procedure png_set_invert_alpha; external pngDLL;
+procedure png_set_invert_mono; external pngDLL;
+procedure png_set_oFFs; external pngDLL;
+procedure png_set_pCAL; external pngDLL;
+procedure png_set_pHYs; external pngDLL;
+procedure png_set_packing; external pngDLL;
+procedure png_set_packswap; external pngDLL;
+procedure png_set_progressive_read_fn; external pngDLL;
+procedure png_set_read_fn; external pngDLL;
+procedure png_set_read_status_fn; external pngDLL;
+procedure png_set_read_user_transform_fn; external pngDLL;
+procedure png_set_sBIT; external pngDLL;
+procedure png_set_sRGB; external pngDLL;
+procedure png_set_sRGB_gAMA_and_cHRM; external pngDLL;
+procedure png_set_shift; external pngDLL;
+procedure png_set_sig_bytes; external pngDLL;
+procedure png_set_strip_16; external pngDLL;
+procedure png_set_strip_alpha; external pngDLL;
+procedure png_set_swap; external pngDLL;
+procedure png_set_swap_alpha; external pngDLL;
+procedure png_set_tIME; external pngDLL;
+procedure png_set_tRNS; external pngDLL;
+procedure png_set_text; external pngDLL;
+procedure png_set_write_fn; external pngDLL;
+procedure png_set_write_status_fn; external pngDLL;
+procedure png_set_write_user_transform_fn; external pngDLL;
+function png_sig_cmp; external pngDLL;
+procedure png_start_read_image; external pngDLL;
+procedure png_write_chunk; external pngDLL;
+procedure png_write_chunk_data; external pngDLL;
+procedure png_write_chunk_end; external pngDLL;
+procedure png_write_chunk_start; external pngDLL;
+procedure png_write_end; external pngDLL;
+procedure png_write_flush; external pngDLL;
+procedure png_write_image; external pngDLL;
+procedure png_write_info; external pngDLL;
+procedure png_write_row; external pngDLL;
+procedure png_write_rows; external pngDLL;
+
+end.
diff --git a/scripts/pngdll.mak b/scripts/pngdll.mak
new file mode 100644
index 0000000..9215300
--- /dev/null
+++ b/scripts/pngdll.mak
@@ -0,0 +1,53 @@
+# Makefile for png32bd.dll
+# ------------- Borland C++ 4.5 -------------
+
+# This makefile expects to find zlib.h and zlib32bd.lib in the
+# $(ZLIBDIR) directory.
+
+# The object files here are compiled with the "stdcall" calling convention.
+# This DLL requires zlib32bd.lib to be compiled in the same way.
+
+# Note that png32bd.dll exports the zlib functions adler32, crc32 and
+# the deflate... and inflate... functions. It does not export the
+# compress and uncompress functions, nor any of the gz... functions,
+# since libpng does not call them.
+
+ZLIBDIR=..\zlib112
+ZLIB=zlib32bd.lib
+PNGDLL=png32bd.dll
+
+CFLAGS= -ps -O2 -C -K -N- -k- -d -3 -r- -w-par -w-aus -WDE -I$(ZLIBDIR)
+CC=f:\bc45\bin\bcc32
+LINKFLAGS= -Tpd -aa -c
+LINK=f:\bc45\bin\tlink32
+LIBDIR=f:\bc45\lib
+IMPLIB=f:\bc45\bin\implib
+
+.autodepend
+.c.obj:
+        $(CC) -c $(CFLAGS) $<
+ 
+OBJ1=png.obj pngerror.obj pngget.obj pngmem.obj pngpread.obj 
+OBJ2=pngread.obj pngrio.obj pngrtran.obj pngrutil.obj pngset.obj 
+OBJ3=pngtrans.obj pngwio.obj pngwrite.obj pngwtran.obj pngwutil.obj
+
+all: $(PNGDLL)
+
+$(PNGDLL): $(OBJ1) $(OBJ2) $(OBJ3) $(ZLIBDIR)\$(ZLIB)
+        $(LINK) @&&|
+$(LINKFLAGS) $(LIBDIR)\c0d32 +
+$(OBJ1) +
+$(OBJ2) +
+$(OBJ3)
+$@
+-x
+$(ZLIBDIR)\$(ZLIB) $(LIBDIR)\import32 $(LIBDIR)\cw32
+|,&&|
+LIBRARY $(@B)
+EXETYPE WINDOWS
+CODE PRELOAD MOVEABLE DISCARDABLE
+DATA PRELOAD MOVEABLE MULTIPLE
+|
+        $(IMPLIB) -c $(@R).lib $@
+
+# End of makefile for png32bd.dll
diff --git a/scripts/zlibdef.pas b/scripts/zlibdef.pas
new file mode 100644
index 0000000..49664d6
--- /dev/null
+++ b/scripts/zlibdef.pas
@@ -0,0 +1,169 @@
+unit zlibdef;
+
+interface
+
+uses
+  Windows;
+
+const
+  ZLIB_VERSION = '1.1.2';
+
+type
+  voidpf = Pointer;
+  int    = Integer;
+  uInt   = Cardinal;
+  pBytef = PChar;
+  uLong  = Cardinal;
+
+  alloc_func = function(opaque: voidpf; items, size: uInt): voidpf;
+                    stdcall;
+  free_func  = procedure(opaque, address: voidpf);
+                    stdcall;
+
+  internal_state = Pointer;
+
+  z_streamp = ^z_stream;
+  z_stream = packed record
+    next_in: pBytef;          // next input byte
+    avail_in: uInt;           // number of bytes available at next_in
+    total_in: uLong;          // total nb of input bytes read so far
+
+    next_out: pBytef;         // next output byte should be put there
+    avail_out: uInt;          // remaining free space at next_out
+    total_out: uLong;         // total nb of bytes output so far
+
+    msg: PChar;               // last error message, NULL if no error
+    state: internal_state;    // not visible by applications
+
+    zalloc: alloc_func;       // used to allocate the internal state
+    zfree: free_func;         // used to free the internal state
+    opaque: voidpf;           // private data object passed to zalloc and zfree
+
+    data_type: int;           // best guess about the data type: ascii or binary
+    adler: uLong;             // adler32 value of the uncompressed data
+    reserved: uLong;          // reserved for future use
+    end;
+
+const
+  Z_NO_FLUSH      = 0;
+  Z_SYNC_FLUSH    = 2;
+  Z_FULL_FLUSH    = 3;
+  Z_FINISH        = 4;
+
+  Z_OK            = 0;
+  Z_STREAM_END    = 1;
+
+  Z_NO_COMPRESSION         =  0;
+  Z_BEST_SPEED             =  1;
+  Z_BEST_COMPRESSION       =  9;
+  Z_DEFAULT_COMPRESSION    = -1;
+
+  Z_FILTERED            = 1;
+  Z_HUFFMAN_ONLY        = 2;
+  Z_DEFAULT_STRATEGY    = 0;
+
+  Z_BINARY   = 0;
+  Z_ASCII    = 1;
+  Z_UNKNOWN  = 2;
+
+  Z_DEFLATED    = 8;
+
+  MAX_MEM_LEVEL = 9;
+
+function adler32(adler: uLong; const buf: pBytef; len: uInt): uLong;
+             stdcall;
+function crc32(crc: uLong; const buf: pBytef; len: uInt): uLong;
+             stdcall;
+function deflate(strm: z_streamp; flush: int): int;
+             stdcall;
+function deflateCopy(dest, source: z_streamp): int;
+             stdcall;
+function deflateEnd(strm: z_streamp): int;
+             stdcall;
+function deflateInit2_(strm: z_streamp; level, method,
+                       windowBits, memLevel, strategy: int;
+                       const version: PChar; stream_size: int): int;
+             stdcall;
+function deflateInit_(strm: z_streamp; level: int;
+                      const version: PChar; stream_size: int): int;
+             stdcall;
+function deflateParams(strm: z_streamp; level, strategy: int): int;
+             stdcall;
+function deflateReset(strm: z_streamp): int;
+             stdcall;
+function deflateSetDictionary(strm: z_streamp;
+                              const dictionary: pBytef;
+                              dictLength: uInt): int;
+             stdcall;
+function inflate(strm: z_streamp; flush: int): int;
+             stdcall;
+function inflateEnd(strm: z_streamp): int;
+             stdcall;
+function inflateInit2_(strm: z_streamp; windowBits: int;
+                       const version: PChar; stream_size: int): int;
+             stdcall;
+function inflateInit_(strm: z_streamp; const version: PChar;
+                      stream_size: int): int;
+             stdcall;
+function inflateReset(strm: z_streamp): int;
+             stdcall;
+function inflateSetDictionary(strm: z_streamp;
+                              const dictionary: pBytef;
+                              dictLength: uInt): int;
+             stdcall;
+function inflateSync(strm: z_streamp): int;
+             stdcall;
+
+function deflateInit(strm: z_streamp; level: int): int;
+function deflateInit2(strm: z_streamp; level, method, windowBits,
+                      memLevel, strategy: int): int;
+function inflateInit(strm: z_streamp): int;
+function inflateInit2(strm: z_streamp; windowBits: int): int;
+
+implementation
+
+function deflateInit(strm: z_streamp; level: int): int;
+begin
+  Result := deflateInit_(strm, level, ZLIB_VERSION, sizeof(z_stream));
+end;
+
+function deflateInit2(strm: z_streamp; level, method, windowBits,
+                      memLevel, strategy: int): int;
+begin
+  Result := deflateInit2_(strm, level, method, windowBits, memLevel,
+                          strategy, ZLIB_VERSION, sizeof(z_stream));
+end;
+
+function inflateInit(strm: z_streamp): int;
+begin
+  Result := inflateInit_(strm, ZLIB_VERSION, sizeof(z_stream));
+end;
+
+function inflateInit2(strm: z_streamp; windowBits: int): int;
+begin
+  Result := inflateInit2_(strm, windowBits, ZLIB_VERSION,
+                          sizeof(z_stream));
+end;
+
+const
+  zlibDLL = 'png32bd.dll';
+
+function adler32; external zlibDLL;
+function crc32; external zlibDLL;
+function deflate; external zlibDLL;
+function deflateCopy; external zlibDLL;
+function deflateEnd; external zlibDLL;
+function deflateInit2_; external zlibDLL;
+function deflateInit_; external zlibDLL;
+function deflateParams; external zlibDLL;
+function deflateReset; external zlibDLL;
+function deflateSetDictionary; external zlibDLL;
+function inflate; external zlibDLL;
+function inflateEnd; external zlibDLL;
+function inflateInit2_; external zlibDLL;
+function inflateInit_; external zlibDLL;
+function inflateReset; external zlibDLL;
+function inflateSetDictionary; external zlibDLL;
+function inflateSync; external zlibDLL;
+
+end.
diff --git a/scripts/zlibdll.mak b/scripts/zlibdll.mak
new file mode 100644
index 0000000..ba557e2
--- /dev/null
+++ b/scripts/zlibdll.mak
@@ -0,0 +1,36 @@
+# Makefile for zlib32bd.lib
+# ------------- Borland C++ 4.5 -------------
+
+# The (32-bit) zlib32bd.lib made with this makefile is intended for use 
+# in making the (32-bit) DLL, png32bd.dll. It uses the "stdcall" calling 
+# convention.
+
+CFLAGS= -ps -O2 -C -K -N- -k- -d -3 -r- -w-par -w-aus -WDE
+CC=f:\bc45\bin\bcc32
+LIBFLAGS= /C
+LIB=f:\bc45\bin\tlib
+ZLIB=zlib32bd.lib
+
+.autodepend
+.c.obj:
+        $(CC) -c $(CFLAGS) $<
+
+OBJ1=adler32.obj compress.obj crc32.obj deflate.obj gzio.obj infblock.obj 
+OBJ2=infcodes.obj inflate.obj inftrees.obj infutil.obj inffast.obj 
+OBJ3=trees.obj uncompr.obj zutil.obj
+pOBJ1=+adler32.obj+compress.obj+crc32.obj+deflate.obj+gzio.obj+infblock.obj 
+pOBJ2=+infcodes.obj+inflate.obj+inftrees.obj+infutil.obj+inffast.obj 
+pOBJ3=+trees.obj+uncompr.obj+zutil.obj
+
+all: $(ZLIB)
+
+$(ZLIB): $(OBJ1) $(OBJ2) $(OBJ3)
+        @if exist $@ del $@
+        $(LIB) @&&|
+$@ $(LIBFLAGS) &
+$(pOBJ1) &
+$(pOBJ2) &
+$(pOBJ3)
+|
+
+# End of makefile for zlib32bd.lib