Though I could not find official documentation, but it seems source field has special usage in TW.
For example, this edition uses source field for creating a hierarchy of tiddlers. http://tw5.scholars.tiddlyspot.com/ It is also used for the source URL of a plugin. (optional) Source URL of plugin https://tiddlywiki.com/static/Plugin%2520Fields.html My understanding is that it is better to avoid source and use some other custom field for my use case. Do let me know if my understanding is incorrect. -- 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 tiddlywiki+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/8cc5eb6b-1a2a-42be-861e-5b83e14f13b7o%40googlegroups.com.