template. For example, {{<span class="searchmatch">soplink</span>|ein|{{=}}|schlagen|lang=de}} produces {{Xyzy|lang=de|einschlagen}}, whereas {{subst:<span class="searchmatch">soplink</span>|ein|{{=}}|schlagen|lang=de}}...
2012 (UTC) I've orphaned it now. It was used in only two places: in {{<span class="searchmatch">soplink</span>}}, which should have used {{l}} instead, and in {{Latin variations}}, which...