Command Mode
      EDit seqname       - get a new sequence file to edit
[n]   Include [seqname]  - insert another sequence [at position n]
                           (SeqEd prompts for range and strand)
s,f   Delete             - delete a range of bases
[s]   Check [/Blind]     - check a range of bases [beginning at s]
      37                 - go to base 37
      REDraw             - redraw the screen
[n]   COmment comment    - insert a comment [at position n]
[n]   COmment            - enter comment editing mode [at position n]
[n]   HEAding            - edit documentary heading [at line n]
      change             - enter screen mode (<Return> is sufficient)
      screen             - enter screen mode (<Return> is sufficient)
      OVERstrike         - enter overstrike mode
      INSert             - enter insert mode
[n]   Mark markcharacter - mark the sequence [at position n]
      PERFect            - require finds to be perfect matches
      PROtein            - set sequence type to PROTEIN
      NUCleotide         - set sequence type to NUCLEOTIDE
[s,f] Write [seqname]    - write [a part of] the sequence to a file
      DIGitizer          - enter digitizer mode
      RELoad             - enter reload mode
      ACCept             - terminate reload mode
      Help               - show commands in screen and command modes
[s,f] EXit  [seqname]    - write [a part of] the sequence and quit
      Quit               - quit the editor without writing the sequence
[n] indicates an optional parameter.
s and f are numbers for start and finish of a range of interest