1    check all string for correct freeing (hole not in indexing)

2    enable/disable faces at runtime
2    time correction (for those with wrong system time)
2    max line length

3    mail cgi (with arguments:receive-addr,Subject,reference-ID)
3    extend navigation control for mail-html (next/previous)

4    additional program for searching
4    additional program for statistics
4    additional program for (re)moving outdated files
