For future reference, in the OSs I've used, Mandrake and FreeBSD, there are F keys to drop down your selections menus and you should be able to change your mc view. Brute force works though. I'm new to the OLPCs and I'm getting ready to load the essentials, like mc, so I may be in for a surprise. IDK.
I'm still getting used to the absence of the "man" command for help
I'm currently configuring three xos, two for my nieces and one for myself.