I screwed up and gave both my mom and dad and myself administrator privileges when setting up their new iMac (which technically means they can **** it up without me knowing it. To my knowledge they alread have). Anyways, it's rather difficult to gain access to their folders and files seeing as the ownership and permissions differ depending on who made it. I just want to clear it up: What do the different permissions really mean in 'more details', ie. groups, owner, others...? What should the permissions be to be optimized (and not making sure that they mess up eachother's folders)??