However, in the AP Chem site it does work, but it's messy. So I dunno. I may have to re-SSI again. That will be annoying. Better now with 4 docs than later with 100.
All extra code is done.
Damn, I have tried to delay this moment as long as possible but the day has come. I must write some material now. So I'm thinking I can write the basics, which have nothing to do with calculus. Like numbers, intervals, functions, trig and other things. I need to make a quick overview, but knowing myself I will probably go into a lot of detail.