HP 39G

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These commands are supplied for use with the battery operated HP infra-red
thermal printer that is designed for use with the hp 38g, hp 39g, hp 40g and
hp 39g+.
PRDISPLAY
If you place this command in a program then the current display will be sent
to the infra-red printer.
PRHISTORY
This command, whether issued in the HOME view or in a program, will send
the entire contents of the History to the infra-red printer.
PRVAR <variable>
This command, whether issued in the HOME view or in a program, will send
the value of the variable to the infra-red printer. This can be used to capture
and send images of graphs without need for programming as follows:
! set up the graph or image as required
! press ON+PLOT to capture the image and store it in grob G0
! in the HOME view, issue the command PRVAR G0.