Alternate method
Choosing a window with the WINDOW
command, which has its lower left corner at
(lowx,lowy)
and its upper right corner at (upx,upy)
,
is equivalent to choosing the graphics sub-window with the
SET
command. That is, the following command:
WINDOW n lowx lowy upx upy
is equivalent to the following:
SET %XLOWERWINDOW lowx SET %YLOWERWINDOW lowy SET %XUPPERWINDOW upx SET %YUPPERWINDOW upy
Using the SET
command to define a window is not recommended. When the
CLEAR
command is entered, the window chosen with the last
WINDOW
command is set up, and the values of
XLOWERWINDOW
,
XUPPERWINDOW
,
YLOWERWINDOW
, and
YUPPERWINDOW
are changed. Thus, if their values had been re-defined with the
SET> command, these values would be lost when the
CLEAR
command is entered.