The Main Toolbar provides shortcuts to some of the commonly used menu items. 
is the same as File>New, 
is the same as File>Open, 
is the same as File>Save (File>Save as for the tool output windows and File>Save Settings for the Controls), 
is the same as File>Print, 
is the same as Edit>Cut (only active for build windows), 
is the same as Edit>Copy (not active for controls), 
is the same as Edit>Paste (only active for build windows, 
is the same as Model>Simulate, 
is the same as Windows>Pop Build Forward, 
is the same as Windows>Pop Output Forward, 
is the same as Windows>Control Panel and 
is the same as Windows>Subscript Control.
The remaining icons deal with simulating models.
