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