Removing selected items from forms in FF

[Marc Shapiro <mshapiro_42@yahoo.com>]

Is there any way to remove selected items from being remembered when 
filling out forms?  There have been times when I have mistyped an entry 
and now, whenever I start to fill in that field, I get the incorrect 
entries, along with the correct ones.  It makes it harder to select the 
right entry from the list.  Is there any way to leave some entries, 
while removing others?

I would think it would be in ~/.mozilla/firefox/default/formhistoy.dat, 
but if it is, it is not in any form that I could extract what I want to 
remove.

Does anyone know if it is even possible to do what I want?

--
Marc Shapiro
mshapiro_42@yahoo.com