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How do I edit my collections?  It used to be easy to do but now I can't find a way to edit it.  I can view it and install things from it but that is all I seem to be able to do.  I'm probably missing something obvious here.  Please help. 

I searched community first but nothing comes up related to collections.  

Mouse seems to have no affect for looking around. I see angles other than straight ahead view in the pictures otherwise I'd as "Is this a strafe only game?". I tried the 64bit version on Windows 7 64 Pro.