or'ed parameters

I noticed in a lot of game libraries that parameters are or'ed, like:

StartUp(init_this | init_that | init_the_other);

but doesnt bitwise or short circuit so that the first true parameter would return true?

awww ^_^ babby's first introduction to bitwise operations.

(hint:
this = 100
that = 010
other = 001
this|that|other = 111)