<<.from-version "5.1.15">> The <<.def tv-filter-export-link>> [[variable|Variables]] controls the value of the `href` attribute on the HTML `a` element generated by the <<.wlink LinkWidget>> widget. If defined, it takes precedence over the [[tv-wikilink-template Variable]].
The variable is treated as a filter that is given the target tiddler title as input. The filter is evaluated and the first result is used as the `href` attribute.