The payoff command gives a census of your trade ships, and lists
the payoff they would give if scuttled at the current sector.
The <SHIP/FLEET> and <SECTS> arguments are provided in case you only
wish to look at one ship
or one fleet or all ships within a given area.
Payoff expects an argument. To see every trade ship you own, give it
the argument '*', or type "ship *".
The report format contains the following fields: