Press these keys during the game:

 [Ctrl][L]  - View hit points of all ants
 [Ctrl][H]  - Hatch ant from anywhere
 [Ctrl][A]  - Select all ants
 [Ctrl][N]  - Select single ant
 [Ctrl][P]  - Select previous ant
 [Ctrl][S]  - Stop selected ant
 [Ctrl][O]  - Options
 [Ctrl][Q]  - Quit game