ppc.library = PowerUp = original solution from Phase5 = stored in ROM = useless these days
powerpc.library = WarpUp = WarpOS = replacement from H&P = the thing you want to use
As OS 3.5/3.9 was done by H&P (the authors of WarpUp) the picture datatype uses WarpUp. Pretty much anything released after 1998 supports WarpUp, as PowerUp had lost the war by then.
Another sad story. WarpOS had nothing better to offer. Only heavy propaganda and lies allowed it to become a "standard". A real shame, and the lesson wasn't even learned.
I still remember how fastquake for PowerUP beats the WarpOS quake ports, even though WarpOS was supposed to have much faster context switches, while it was obviously totally wrong.
