Thread:Support/About MediaWiki:Interwiki local 0 intro and MediaWiki:Interwiki local 1 intro/reply (2)

Ok, there's enough room for the message, since it's displayed on the legend at Special:Interwiki (collapsed)

About the second one, I still think that the clarification is misleading, suggesting that you'll see the foreign wiki content on the local wiki (domain, URL, etc), but that's OK. Will submit the patch when I have time.