take both xo/yo from center column when using XLUT (YLUT behavior unchanged)
[slipway.git] / images /
drwxr-xr-x   ..
-rw-r--r-- 69614 keyboard.png
-rw-r--r-- 73627 keyboard1.png
-rw-r--r-- 38275 keyboard2.png
-rw-r--r-- 35080 keyboard3.png