Program functionality: A manner for independently
verifying the program's functioning should be provided. Ideally, the
opening screen (when the program is first brought up) should present
a self-diagnostic report on program functioning. Alternatively, a
range of sample loading conditions can be furnished (on paper) which
can be manually entered into the program for comparison with correct
draughts, trim and available GM. The sample conditions may be the
same as found in the ship's approved stability booklet, or separate
samples included in the program's user manual.