History is a command used to see the last five commands you have entered.
In Game Description
A history of your last five commands is stored, which can allow you to repeat commands without retyping them. In order to see your command history, type "history". Repeating one of those commands is then done with "!#", for example "!5" to repeat the fifth command. Examples: > history 3. l whole board 2. read 21 1. history > !2