Last modified: 2014-09-10 17:53:17 UTC
So that babels can be embedded in broader userboxes tables of all sorts without being forced to use the new system for everything.
As one who brought this up in a discussion at Meta ([[m:Talk:Babel extension#Header and footer]]), I vote for this enhancement. Were I to use the Babel box it would only be for the purpose of indicating which languages I understand: I would not want to include self-references to the Babel system on my user page, and I am sure there are other people who would feel the same way.
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