On whether to Write Out Numbers in either Word Form, or as "Direct Numbers", -I'd Think that Using Actual "Direct Numbers", are Better! They're Far More Familiar, Far More Readily Visible, and Unambiguous! They Have a Stand Out Visibility and Contrast!, -that "Word Form Numbers" Just Can't Match!

Also, an Illiterate Person / andor One who Doesn't Speak or Understand English, -Will be Far More Likely to be Able to Read a "Numerical Number", rather than a "Word Number".

Though some Won't even be Able to Read These,-Nor by the Definition of Illiteracy, -So Much Else that you Write.

Of course and Fortunately, -a Majority of People are Not Illiterate! And here in America, Britain, and some Other Places, -Most People can certainly Understand English.

Also, Drawing Pictures and Diagrams, -often as Simply as Possible, -Can also be Done either In Place Of, or In Addition To, your Words. You can even Do various Mixtures of Such.

Do Go for something like a 5th or 6th Grade Level. This is What Newspapers typically do, I've once heard. (Despite some Unavoidable Use of some Big Words.) And your Average Newspaper Reader Doesn't Feel Insulted, or as if They were Being Talked Down to like a Child!

Once again, I would Much More Suggest "Direct" or "Numerical Numbers", in Place of Written Out "Word Numbers" [color:"black"] [/color] [email]Wayneburg[/email]