Case in ISO-Pascal!!!

Hello!

I'm not sure if the code snippet I'll put there is or not standard:

...........
case v of
   1 : do_something;
   2 : do_something;
   else do_other_thing;
...........

I have the problem with the else sentence. I have read the
Pascal ISO 7185 :1990, and I think that is not standard,
but I want to be sure before I stop using it.

Thanks.

Zaka.