| Write/Read | About Auto Port Extensions | 
| Description | Enables and disables automatic port extensions on the specified port. All enabled ports will have their reference plane automatically adjusted after performing Automatic Port Extension. | 
| VB Syntax | fixture.AutoPortExtState (port) = bool | 
| Variable | (Type) - Description | 
| fixture | A Fixturing (object) | 
| port | (Integer) Port number to enable or disable. | 
| bool | (Boolean) True - Enables Auto Port Extensions False - Disables Auto Port Extensions | 
| Return Type | Boolean | 
| Default | False | 
| Examples | fixture.AutoPortExtState(1) = True | 
| value = fixture.AutoPortExtState(2) 'Read | |
| C++ Syntax | HRESULT get_AutoPortExtState(short port, VARIANT_BOOL *pState ); HRESULT put_AutoPortExtState(short port, VARIANT_BOOL bVal); | 
| Interface | IFixturing2 |