Only gives meaningful output when used with an interlanguage template (Template:xx), e.g. Template:ja. Specifies how the external link to the other wiki is going to be generated.


{{langdecide|(template name e.g. ja)|(parameter 1)|(parameter 2)}}

If (P2) specified, equals 0, no link. If (P2) specified, not equals 0, link to (P2). If (P2) not specified, link to (P1). The text displayed is always (P1) regardless of how the linking changes, and whether there is a link or not.

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