Which format is good for what? [[]] is for internal zettel links, right? I see []() used more broadly in other applications. In the zettel context, they should be interchangeable. Or obsidian should have a feature to deal with the two types.Remember Obsidian isn't a zettelkasten program - it's just capable of being used as one. [[]] is a wiki link, []() is the conventional markdown syntax. Obsidian prefers the former because it's simpler, but can understand the latter.
This whole class of software is rooted in wikis.
Wiki to outliner (Workflowy), pure wiki type outliner to hybrid with multiple outlines (Dynalist), to Roam with bidirectional links and idiosyncratic selections of markdown syntax in its database/documents (some if its syntax taken directly from Dynalist), to Obsidian which uses actual markdown files. The most commonly referred to traditional alternative to the last two is Tiddlywiki and its offshoots.
I haven't used zettlr, but I think it's designed purely zettelkasten and doesn't have the whole setup around bidirectional links?








Tabs are typewriter technology; a breakthrough in their time, but that was over a century ago.