Template:Navlist/Link subpage/doc

Usage

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Takes one optional, unnamed parameter. If the parameter is non-blank, and the transcluding has a subpage with that name, produces a link to that subpage, with the parameter as its label, i.e., [[{{FULLPAGENAME}}/{{{1}}}|{{{1}}}]]. If the parameter is blank or the subpage doesn't exist, produces blank (the empty string, with no whitespace).