size
Entity: predicate

position
Entity: predicate

Usage:
size(Win, X, Y)

Gets or sets the size of the window Win (Use _ for Win to point the current window).

If X and Y are instantiated then size sets the size to the new size X, Y.
If X and Y are not instantiated then size gets the current size in the variables X and Y.

Usage:
position(Win, X, Y)

Gets or sets the position of the window Win (Use _ for Win to point the current window).

If X and Y are instantiated then position sets the position to the new position X, Y.
If X and Y are not instantiated then position gets the current position in the variables X and Y.

See also:
client
window
button