Returns the logical resolution of screen .
capi
screen-logical-resolution screen => xlogres , ylogres
screen-logical-resolution
screen
A screen.
xlogres, ylogres
Integers representing the logical resolution of screen in DPI.
The function screen-logical-resolution returns the logical resolution of screen , as dots per inch in the x and y directions.
screen Screens
CAPI User Guide and Reference Manual (Unix version) - 3 Aug 2017