(Newbie) How to turn AutoFill-mode on/off

[Elaine Sims]

(Sorry for the double post - just found the correct newsgroup).

I'm new to Xemacs and want to know if there is a way to undo Auto-Fill 
mode after I've saved my doc and reopened it.

Basically, I want to be able to work on a document in autofill-mode, 
save as is, multiple times.  Then when the doc is completely done, open 
it, remove all the artificial line breaks and resave as a simple text 
file.

I don't know much about LaTex or TeX, would they be more efficient for 
this purpose?

Thanks,
Elaine Sims