9.1.1. - Type <return> twice with z commands
All the
z commands except
ze require you to enter a second
<return> at the keyboard before the
PLOT-> prompt will
again be displayed.
This feature accommodates filters displaying graphics
on terminals that have a distinct graphics mode and that erase the
graphics when put back into text mode.
You can view the graphics display,
then enter the second
<return> to get back to text mode.
The current graphics filter isn't necessarily associated with the
screen.
If you are using a printer filter and enter a
z command
and
<return>, nothing will appear on the screen and the plot
won't be sent to the printer until you enter the second
<return>.
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