Menu driven binary editor. Dataformats are
ascii, unsigned and signed integers, float, bitflags,
bitfields, labels, ebcdic and time_t. Different sizes
and byte ordenings are possible. Datatypes can
be used in structures. Other dataformats, filters and
procedures can be defined in plugins. Contains copy,
past, undo, redo, search, replace, marks, record/play and
context sensitive help. Linux & FreeBSD: edit block devices 
(linux limit 1023 gigabyte).