&reference.pcre.functions.pcre.pattern.modifiers;
&reference.pcre.functions.pcre.pattern.syntax;
&reference.pcre.functions.preg-grep;
&reference.pcre.functions.preg-match;
&reference.pcre.functions.preg-match-all;
&reference.pcre.functions.preg-quote;
&reference.pcre.functions.preg-replace;
&reference.pcre.functions.preg-replace-callback;
&reference.pcre.functions.preg-split;