How to edit language when using 'en'?

Barry Flanagan barryf-imp@digiserve.ie
Tue, 20 Nov 2001 10:58:37 +0000 

I know this is bound to be a stupid question, but I can't see where to change 
the words used in IMP when using the default English language - there is no 
en.po file.

Where do I edit if I want to change the wording of the english language used 
in IMP?

Thanks in advance.

-Barry Flanagan