Editing character matrices

[Mike Taylor <mike@indexdata.com>]

What do you all use for editing your character matrices?  Up till now,
I've been editing the Nexus file by hand using a text-editor.  That
was OK when I was just adding taxa, but is going to be way cumbersome
now I'm adding characters, too.  Thanks for all suggestions, other
than Mesquite.  (Please, no-one recommend that!)

 _/|_    ___________________________________________________________________
/o ) \/  Mike Taylor    <mike@indexdata.com>    http://www.miketaylor.org.uk
)_v__/\  "Gosh, I am glad I'm a fully-qualified airline pilot" -- Monty
         Python's Flying Circus.