> root@notlookedfor:/home/hendrik# /usr/bin/lpr -h -PHL3170CDW Documents/math/Librationism=1407.3877v3.ps
> root@notlookedfor:/home/hendrik# lpq
> Printer: HL3170CDW@notlookedfor (dest 515@172.25.1.122)
>  Queue: no printable jobs in queue
>  Server: no server active
>  Status: job 'root@notlookedfor+929' saved at 14:32:41.255
>  Rank   Owner/ID               Pr/Class Job Files                 Size Time
> error  root@notlookedfor+929        A   929 ERROR: Mystery error from Send_job
> Printer Name: 515
> Jobs: No Jobs in Queue
> root@notlookedfor:/home/hendrik# 

| The rm (remote machine or host) and rp or lp printer printcap options
| are used to specify the remote host and printer to be used. These values
| can be extracted from a printcap entry, or supplied in the following
| manner.
| 
|     If the user program is invoked with -Pxxx argument, then the lp
|     option is assigned the value xxx.
|     
|     If no explicit value is specified and the PRINTER environment
|     variable has value xxx, then the lp option is assigned value xxx.
|     
|     If lp has a value of the form rp@rm or rp@rm%port, then the rp, rm,
|     and lpd_port options are assigned the indicated values.
|     
|     If rm or rp does not have a value, then they are assigned the
|     default_host (usually localhost) and default_printer (usually lp)
|     option values.
|     
|     A connection is made to lpd_port on host rm and the file transfer or
|     command is sent as specified in RFC1179.