-This is an association list that maps from tag name regexps to
-lists of formatting expressions. The first entry whose car
-regexp-matches a tag will be used to format that tag. The regexp
-is implicitly anchored, so to match a literal tag name, just use
-that tag name (if it contains special regexp characters like
-\".\" or \"*\", these have to be escaped). The cdr of the
-matching entry gives a list of Elisp expressions that modify the
-tag. If the list is empty, the tag will simply be hidden.
-Otherwise, each expression will be evaluated in order: for the
-first expression, the variable `tag' will be bound to the tag
-name; for each later expression, the variable `tag' will be bound
-to the result of the previous expression. In this way, each
+This is an association list of the form ((MATCH EXPR...)...),
+mapping tag name regexps to lists of formatting expressions.
+
+The first entry whose MATCH regexp-matches a tag is used to
+format that tag. The regexp is implicitly anchored, so to match
+a literal tag name, just use that tag name (if it contains
+special regexp characters like \".\" or \"*\", these have to be
+escaped).
+
+The cdr of the matching entry gives a list of Elisp expressions
+that modify the tag. If the list is empty, the tag is simply
+hidden. Otherwise, each expression EXPR is evaluated in order:
+for the first expression, the variable `tag' is bound to the tag
+name; for each later expression, the variable `tag' is bound to
+the result of the previous expression. In this way, each