TiddlyWiki5 can be used to build older 2.x.x versions of TiddlyWiki from their constituent components. Doing so involves these additional features over and above those used for building TiddlyWiki5:
tiddlywiki2/loadrecipe plugin, which allows tiddlers to be loaded from TiddlyWiki 2.x.x .recipe filestiddlywiki2/stripcomments plugin, which adds a new viewer format for the <$view> macro that strips single line JavaScript comments starting //#stripTitlePrefix='yes' attribute of the <$fields> widget, which removes prefixes wrapped in curly braces from the title attribute