Just thought I'd mention I wrote a 4 level grayscale routine today for the next version and it seems to work very nicely.  The only problem is that it needs to be initialized before you can start using it, so you need to add one extra command to the top of your code, but the code itself is tiny.

That sounds really nice!  I can't wait to see what's possible with it!

Yup. One big advantage of Axe over ASM is that you don't need like 30 lines of code to do some simple stuff and can easily do it very fast and on-calc. And I think my program shows it by the fact Axe 0.2.3 doesn't even have a 4 level grayscale routine at all, it has to be done manually

Not only that but Axe introduces you to how calc RAM works without having to learn ASM.