The set log command causes LP to start recording the terminal session in a
file named <file>.lplog (unless <file> contains a period, in which case
LP does not supply the suffix .lplog) in LP's current working
directory. Any previous contents of this log file are lost. If LP
was already logging to a file, that file is closed before opening the new log
file. Logging is ended by the quit or
unset log commands.