Testing... I'm learning Classic Mac OS Toolbox programming and Carbon programming, as a hobby which *could* be helpful on realworld projects as well (port old software f.e.).
And besides that I think that Mac OS 7's interface is just the most beautiful ever :b&w: .
I have the sourcecode of MacOnMac, of course I cannot test it since I came from 15 yrs of windoze to an Intel based Mac (last real Mac before was when I was a child). My little PowerMac will come after Pentecost (is that the right word??) and I will try MacOnMac.