LP, the Larch Prover -- Interrupting LP
Often one wants to interrupt an execute, order,
critical-pairs, or complete command (e.g., to change the
registry, to display the system, to alter
the trace-level, or to freeze the
system). This can be done by typing ^G (hold down the control key and
type g), which will return the user to the LP command level (it may take
several seconds for this to happen). The complete and order
commands can be issued again to resume their execution.