You can make links that lead to Wikipedia's sister projects, and a few other places, without the arrow that accompanies external links. Here's how:
| Prefix | Example | Shortcut |
|---|---|---|
[[wikibooks:]] | wikibooks: | [[b:]]b: |
[[meta:]] | meta: | [[m:]]m: |
[[mediawikiwiki:]] | mediawikiwiki: | [[mw:]]mw: |
[[wikinews:]] | wikinews: | [[n:]]n: |
[[wikiquote:]] | wikiquote: | [[q:]]q: |
[[wikisource:]] | wikisource: | [[s:]]s: |
[[wikipedia:]] | [[wikipedia:]] | [[w:]]w: |
[[wiktionary:]] | wiktionary: | [[wikt:]]wikt: |
[[commons:]] | commons: | [[c:]]c: |
[[wikidata:]] | wikidata: | [[d:]]d: |
[[wikispecies:]] | wikispecies: | [[species:]]species: |
[[google:]] | google: | used for google queries |
[[mediazilla:]] | phabricator: | used with bug numbers |