— Function: frame-properties &optional frame

This function returns a plist listing all the properties of frame and their values.

— Function: frame-property frame property &optional default

This function returns frame's value for the property property, or default if there is no such property.

— Function: set-frame-properties frame plist

This function alters the properties of frame frame based on the elements of property list plist. If you don't mention a property in plist, its value doesn't change.

— Function: set-frame-property frame property value

This function sets the property property of frame frame to the value value.