set tabstop=8 
set wrap
set tw=72

imap ä ae
imap ö oe
imap ü ue
imap Ä Ae
imap Ü Ue
imap Ö Oe

"Bei Subjectänderung Re2Was
imap <C-R> :set nohlsearch<CR> 1,/^Subject: /g//s/^\(Subject: \)\(Re: \)\=\(.*\)$/ 1 (was: \3)/<CR>9<space>i

"Aus > > > ein >>> machen
imap <C-Q> :g/^[> ]\+/s#>#>#g