Few questions about .pot

[Jasem Mutlaq <mutlaqja at ku dot edu>]

Greetings all,

I have few questions :-)

1) How do you create the initial .pot file for an application? I know you can 
edit the .pot using KBabel, but how do you create .pot in the first place?

2) When I "compile" a file in KBabel, it gives it an extension of .gmo, but 
when I checked the files under /opt/kde3/share/locale/ar, I found them all 
with an extension .mo, what's the difference? I got KStars to work in arabic 
by simply changing the extension to .mo, but is that all?

3) now I have a translation for KStars called kstars.po, if KStars.pot was 
changed by the developer, do I have to translate the whole thing again or is 
there a way to merge kstars.pot and kstars.po to translate only the new 
things that have been added?

cheers,
Jasem Mutlaq