A while ago, a coder at /vg/station accidentally discovered that there is a built-in proc named key(). I haven't been able to find any mention of it anywhere. All I've been able to discern about it from testing is that it is an output method that takes a file as its only argument (though it won't runtime if given a string that is not the name of a file). Unlike message(), it does not generate a warning if compiled with.
So what does it do?
May 25, 6:13 pm