%C	[options]*  &
Options:
 -c             Check that printer is ready on open.
 -b number      Use this printer as defined in the BIOS (default: 1).
 -p number      Use this (hex) I/O address for printer port.
 -N name        Prefix to register (default: "par").
 -O number      Size of output buffer (default: 1000).
 -P priority    Priority to run when printing (default: 9).
 -s sleeptime   Number of seconds to sleep on printer busy before
                discarding output (default: forever).
 -w waittime    Number of micro-seconds to busy-wait on printer before
                reverting to periodic polling (default 1000 usec).
Examples:
 Dev.par &                - Start Dev.par with LPT1 being "/dev/par".
 Dev.par -b 2 -N laser &  - Start another Dev.par with LPT2 being "/dev/laser".
