Documentation
Publicon
Reference
Preferences
Notebook Options
PrivateNotebookOptions->{...}
"RealTimeWindowMove"
• "RealTimeWindowMove" is an option for notebooks that determines if the screen display of a notebook is dynamically updated as it is dragged across the screen using the mouse.
• With the setting "RealTimeWindowMove" 
True, the screen display of a notebook is dynamically updated as its position changes.
• With the default setting "RealTimeWindowMove" False, the display of a notebook is updated only after you finish dragging it and release the mouse button.
