The command to send the contents of a window to a printer is 'xdpr'.  First,
make sure that the window you want to print is entirely visible on the
display.  Then type this command in any available 'xterm' window:

	xdpr -Pprinter

Where 'printer' is the name of your favorite PostScript printer (all of the
Project Athena printers are PostScript printers).  In a few moments, the mouse
pointer will change to a "cross" shape.  Move the mouse pointer to the window
you want to print, and press any mouse button.  The workstation will
immediately "beep" once, which indicates that 'xdpr' is starting to make a
copy of the window's image for printing.  Then the workstation will "beep"
twice, indicating that the image has been copied and is to being sent to the
printer.