Replaces params in strings Replacements can be in the following forms: {PARAM} Does a replacement with a named parameter, PARAM, specified in any case {#PLURAL|PARAM|SINGLE|MULTIPLE} Does a replacement with SINGLE if PARAM (any case) is 1, and with MULTIPLE if PARAM is anything else {#NL} Adds a new line to the output {#URLENC|PARAM} Returns the specified parameter, urlencode()ed. {#HTMLENC|PARAM} Returns the specified parameter, htmlspecialchars()ed.