Collision info?

Blitz3D Forums/Blitz3D Beginners Area/Collision info?

Hi,
Is there anywhere I can get more details on how the B3D collision-system works? There's a couple of things I particularly need to know:

1) How do collisions get resolved - do both the source and dest entities move, or only one? If only one moves, which is it?

2) Is there a way of disabling collision between two types of entity? For example, say I'm using boxes at the edges of the screen to stop the player going offscreen, but I want baddies to be free to pass through these boxes. And of course I want the player to collide with baddies. Is this doable?

Any info on this would be much appreciated.