SXEmacs has two main programming languages, Emacs Lisp, and C, therefore we need two sets of coding styles.
Read see (lispref)Style Tips
Please take particular note of...
Don't make a habit of putting close-parentheses on lines by themselves; Lisp programmers find this disconcerting. Once in a while, when there is a sequence of many consecutive close-parentheses, it may make sense to split them in one or two significant places.
The only other thing I have to say about lisp coding style is to keep your lines under 80 columns in length.
First off, I'd suggest printing out a copy of the GNU coding standards, and NOT read it. Burn them, it's a great symbolic gesture.– Linus Torvalds