@@ -870,7 +870,8 @@ identifier. This identifier is based on the text of the header. To
870870derive the identifier from the header text,
871871
872872 - Remove all formatting, links, etc.
873− - Remove all punctuation, except underscores and hyphens.
873+ - Remove all punctuation, except underscores, hyphens, periods,
874+ and tildes.
874875 - Replace all spaces and newlines with hyphens.
875876 - Convert all alphabetic characters to lowercase.
876877 - Remove everything up to the first letter (identifiers may