cs: Czech language
Verify this language code:
✔ cs is a well-formed language code. 
✔ This seems to be a code for an actual language.
✔ This language code is enabled on Translatewiki.
MediaWiki core messages: 100.0 %: 3949 / 3949 messages
Most important messages: 100.0 %: 578 / 578 messages
Collection extension: 52.84 %: 93 / 176 messages
ProofreadPage extension: 53.51 %: 99 / 185 messages
Android Wikipedia app: 65.71 %: 1445 / 2199 messages
iOS Wikipedia app: 44.23 %: 816 / 1845 messages
Main extensions used by Wikimedia: 79.33 %: 5684 / 7165 messages
Most important messages: 100.0 %: 578 / 578 messages
Collection extension: 52.84 %: 93 / 176 messages
ProofreadPage extension: 53.51 %: 99 / 185 messages
Android Wikipedia app: 65.71 %: 1445 / 2199 messages
iOS Wikipedia app: 44.23 %: 816 / 1845 messages
Main extensions used by Wikimedia: 79.33 %: 5684 / 7165 messages
✔ This language code is available for general use in MediaWiki.
✔ This language is available for general use on Wikidata.