I think the length is up to you, depending on your own interpretation of "semantic unit"
See [Philosophy of Tiddlers](https://tiddlywiki.com/#Philosophy%20of%20Tiddlers) In terms of pragmatics, there have been multiple approaches to how to deal with long tiddlers. One of the current approaches is discussed in this [thread](https://talk.tiddlywiki.org/t/section-editor-plugin-first-stable-release/1060) -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/c4de886f-25b6-4307-b93c-79fb06c92e59n%40googlegroups.com.
