A template tiddler is not actually a type of tiddler, it is a role in which a tiddler can be used.
Templates are a way to re-use chunks of WikiText.
Transcluding through a template extends the basic functionality of Transclusion by combining two tiddlers:
- A template tiddler that contains the WikiText to be displayed. It can contain transclusions that reference fields in the current tiddler
- A target tiddler that identifies which tiddler is to be treated as current when resolving references to fields
See Transclusion with Templates for details.