Help: Clarify documentation on regex character classes
In particular, give an example of matching `]`.
diff --git a/Help/command/string.rst b/Help/command/string.rst
index 2f01653..6bd56a1 100644
--- a/Help/command/string.rst
+++ b/Help/command/string.rst
@@ -136,15 +136,16 @@
or ``\\`` for a literal backslash ``\``. Escaping a non-special
character is unnecessary but allowed, e.g. ``\a`` matches ``a``.
``[ ]``
- Matches any character(s) inside the brackets
+ Matches any character(s) inside the brackets.
+ To match a literal ``]``, make it the first character, e.g., ``[]ab]``.
``[^ ]``
- Matches any character(s) not inside the brackets
+ Matches any character(s) not inside the brackets.
+ To not match a literal ``]``, make it the first character, e.g., ``[^]ab]``.
``-``
- Inside brackets, specifies an inclusive range between
- characters on either side e.g. ``[a-f]`` is ``[abcdef]``
- To match a literal ``-`` using brackets, make it the first
- or the last character e.g. ``[+*/-]`` matches basic
- mathematical operators.
+ Inside brackets, specifies an inclusive range between characters on
+ either side, e.g., ``[a-f]`` is ``[abcdef]``.
+ To match a literal ``-`` using brackets, make it the first or the last
+ character, e.g., ``[+*/-]`` matches basic mathematical operators.
``*``
Matches preceding pattern zero or more times
``+``
