Change of Design
I've changed the design a little. Bad news: it now looks even more like a text book , but it is wider than the old version and it's not so centered. If you have a wide screen (I use a resolution of 1400 by 1050) you will see a lot of unused space at the right. If you have a small screen (say of 640 or 800) you will probably need to scroll to the right to see the whole width of the page.
Comments on the new design are needed. Even better than comments is giving me pictures/code that will work on my new design.
Writing should begin again soon. So does classes which begins tomorrow.