Manual nomenclature

Where is the guide to the color coding and explanation of the manual. Example below – green is ? htmlspecialchars — Convert special characters to HTML entities Description ¶ <http://php.net/manual/en/function.htmlspecialchars.php#refsect1-function...ht mlspecialchars-description> string htmlspecialchars ( string $string [, int $flags = ENT_COMPAT | ENT_HTML401 [, string $encoding = ini_get("default_charset") [, bool $double_encode = true ]]] ) **************************************************************************** * Elmer Beardshall Hattiesburg, Mississippi **************************************************************************** * "The learned man aims for more. But the wise man decreases. And then decreases again."