Template:WPD

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This version is common to all sites except Wikipedia

Note: Hidden content. This is common usage for a number of templates.

This is a register macro that might alternatively be stated as:

{{#ifeq:{{SITENAME}}|Wikipedia|{{void}}|w: }}

where 'w:' is the definition on all other English language sister projects. It's purpose is to simplify local output code and avoid precisely that sort of #ifeq: code statement in working templates.

Locally on Wikipedia (The different version), this template has the effect of replacing the full url version [[w:Some page name|Some page name]] with a local wikilink version which will then reveal bad links (redlinks) if a page does not exist.

This is used in a number of templates as a sub-template for that reason, especially those needing interwiki portability.

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This different method of implementation has instead a hardcoded different fixed value on and off Wikipedia when accessed by the identical template and so allows portable template coding.