"On the other hand, if it's right about memory allocation being in powers of 2, those 3000x3000 hi-res maps for Vicki are a bit silly." One thing to keep in mind about almost all computers you'll run into currently - ultimately EVERTHING resolves to a power of 2 - it's all about binary. Anything that doesn't itself resolve into a power of 2 will mean a waste of resources at some point. Sometimes you can't help it (we don't operate digitally), but always keep that in the back of your head when working in the digital world. Unzipped