Tiny wordsmithing.
diff --git a/doc/how-bloaty-works.md b/doc/how-bloaty-works.md
index ea0ff13..a1f475d 100644
--- a/doc/how-bloaty-works.md
+++ b/doc/how-bloaty-works.md
@@ -92,8 +92,9 @@
Also notice that there is an entry in the VM map that says `[-- Nothing mapped
--]`. This is calling attention to the fact that there is a gap in the address
space here. Since nothing is mapped, these regions of the VM space don't
-actually need to be mapped. However, unless this unused space aligns with page
-boundaries, it will probably end up getting mapped anyway.
+actually need to accessible in the target process image. However, unless this
+unused space aligns with page boundaries, it will probably end up getting
+mapped anyway.
Sometimes we know a region's start but not its end. For example, Mach-O
symbols have an address but not a size (whereas ELF symbols have both).
