AIPS HELP file for TVWINDOW in 31DEC18
As of Sun Mar 18 15:20:21 2018
TVWINDOW: Verb to set window with TV cursor & graphics display.
Only input is from TV cursor.
@ Output adverbs
BLC @ 0.0 4096.0 Pixel location (X,Y,...) in
@ image of lower left corner.
TRC @ 0.0 4096.0 Pixel location (X,Y,...) in
@ image of upper right corner.
Use: To set values in the adverbs BLC and TRC using the TV cursor
with a TV graphics display of the window as it is being set.
The terminal will issue instructions. While setting the lower
left corner of the window for the first time, any button will
mark the corner and switch to setting the upper right corner of
the window. While setting the upper right corner or resetting
the lower left, button A marks the current corner and switches
to the other corner, buttons B, C and D exit.
BLC........Bottom left corner of set window in pixel coordinates.
TRC........Upper right corner of set window in pixel coordinates.