change in ikiwiki syntax. It also handles other transitions not involving
wiki pages.
-# prefix_directives file ...
+# prefix_directives your.setup
-The `prefix_directives` mode converts the specified ikiwiki page from
-the old preprocessor directive syntax, requiring a space, to the new
-syntax, prefixed by '!'.
+The `prefix_directives` mode converts all pages from the old preprocessor
+directive syntax, requiring a space, to the new syntax, prefixed by '!'.
Preprocessor directives which already use the new syntax will remain
unchanged.
-Note that if the page contains wiki links with spaces, which some
+Note that if a page contains wiki links with spaces, which some
older versions of ikiwiki accepted, the prefix_directives transition will
treat these as preprocessor directives and convert them.