Translations:Parser function extensions/1/en

A "parser function" is a template-like construct that returns a value based on at least one unnamed parameter, separated from the function name by a colon $colon. There may be more parameters, as well; like those of ordinary templates, these additional parameters are each preceded by a "pipe" $pipe. In the case of a hash character $hash at the start of the function name (which prevents collision with namespaces and interwiki prefixes), this may or may not be considered part of the name. If it is considered part of the name, the syntax is of the form