V2

     I was filling out Jeffrrey's survey for a language I'm working on, which
reminded me of a question I've had for some time but never asked: what
exactly is a "V2" language?  I know it stands for "verb second" but does that
mean the verb always immediately follows the subject in all clauses, or what?
 I can't find much on the topic, figured someone on the list might know...

thanks
Dale