"3. use the pre and /pre tags so that your code gets displayed nicely on the forum."

Just to clarify, you don't put the tags in your source code; you just use them when you post your code to this forum.
These tags specify that the enclosed text is to be displayed in a mono-spaced (non-proportional) font - which ensures that your code layout is preserved.

For more details & an example, See http://www.8052.com/forum/read.phtml?id=57397