XSIAmbientOcclusion Shader ray classification?

["Steven Caron" <carons(at)gmail.com>]

hey everyone

what type of rays are the "probe" or "occlusion" rays?

also i am trying to get an object to recieve contact like shadows from
another object, but not show its detail shadows on the object. i think
the answer to the first question will help me figure out this, but i
figured what the hell i would put it out there

thanks in advance
steven

ps had some trouble sending first time, so just in case, sorry for multiple emails