As per the docs <https://tiddlywiki.com/#TiddlerFields>:
source is field is used by the core for The source URL associated with a tiddler Is there a practical example of it being used? What I am looking for? I want to add a field that can be used for links to the source of the tiddler. Say I copy the content from Wikipedia and I want to mention the link the Wikipedia article. Can I use source field for it? Or should I add a new field like url? I can then customize ViewTemplate to automatically show the source url in the body of the tiddler. But which field should I use? -- 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/a90536c7-15c9-4ce9-9dc1-c50885d7abf3o%40googlegroups.com.

