Gets a list of all secondary handles of the open desktops associated with the current client. In this case, secondary means any desktop frame opened by the original client frame. Exampe: If the original client opened 2 new frames ('left client' and 'right client'), then this function would return ['left client', 'right client']
See the Multi-Monitor Clients page for more details about using multiple monitors.
This scripting function has no Client Permission restrictions.
PySequence - A list of window handles of all secondary Desktop frames.