4.3.6 SLRAT

1.
Function
The margins are taken so that all of the frames on the current level have the maximum size with the specified aspect ratio.
2.
Call
CALL SLRAT(RX,RY)
3.
Explanation of Parameters
RX, RY (R) Gives the aspect ratio of a frame. For example, if RX=1.0 and RY=1.0, the margins are taken so that the largest possible square frame is set.
4.
Notes
(a)
Must be: RX, RY>0.