The <<.def tag>> [[macro|Macros]] generates a tag pill for a specified tag. Clicking the tag pill opens a dropdown. This can be compared to the [[tag-pill Macro]] which also features other parameters.
<<.tip """If a [[list widget|ListWidget]] generates multiple tag macros for the same tag, clicking on one of them will open dropdowns on all of them. The simplest way to prevent this is to add the `counter="transclusion"` attribute to the list widget. See the examples below for more details.""">>