Thank you for your replies.

I like the idea of having simple illustrations with the instructions.
I now understand that the formal style leaves no room for errors or interpretation.
And you've both shown why using numbers exclusively not only leaves less room for error, it also takes up less room. <img src="images/graemlins/smile.gif" alt="" />

Here are some more things to consider:
In what order should the instructions be presented to the reader?
-Highest priority subjects to lowest priority subjects
-Subjects listed alphabetically

Should there be a glossary?

I want the instructions to be as short and clear as possible not only for the weight savings, but because I don't want the instructions to be so long that it is intimidating to the reader. Should this even be a concern?

That's all I can think of right now. I'll write more later.

Thanks
Wayneburg