Can excel automatically number itself each time you open a documen

[Alesha]

Say you have a general document, is it possible that every single time you or
someone else opens that document it generates a new number but never repeats?

If Excel can't do this, can word?

 

[Bernard Liengme]

Use this to do a Google newsgroup search
http://www.google.ca/groups?as_q=invoice&safe=off&as_ugroup=*excel*&lr=&hl=en