In #Coq, ever wonder what goes in the brackets in `destruct x as [...]` or `intros [...]`? Wonder no more: https://coq.inria.fr/distrib/V8.8.2/refman/proof-engine/tactics.html#coq:tacn.intros
It has some neat features if you're into unreadable one-liner tactics (that noone is going to read anyway) like me.
Welcome to your niu world ! We are a cute and loving international community Ｏ(≧▽≦)Ｏ !