Wikitext that prefixes the signature. The prefix and signature will be appended directly to the message, so this must include a leading space if a gap is desired.
This message intentionally doesn't use the prefix from Sig-text (“--$1”), because it is not actually commonly used on many wikis, but you can include it in the translation if that is the convention in your language.
{{SITENAME}}), parser functions (such as {{PLURAL:}}, {{GENDER:}}), wikitext markup (such as '''bold text''', [[wikilink|text]]), HTML markup (such as <span lang="en">foo</span>), HTML character entities (such as &zwsp;, {).
Due to limitations in the software using this message, only three very specific HTML character entities allowed even in plain mode; they are:
  (regular space) (non-breaking space, named)  (non-breaking space, numerical)