For example, when I was learning a foreign language, I used TiddlyWiki’s double-chain feature to generate a bilingual reading material, and if I didn’t create a word note, Tiddles would automatically highlight it, indicating that I needed to make a tiddlywiki note about that word
I didn’t create the “four” in the instance, but tiddlywiki will have the same color as the one that has the established note connection reference