# System Parameters

'1U' | Force Dedicated User Slot

## Description

Forces PxPlus to use a dedicated user slot for the session. This removes the shared nature of PxPlus under Windows or WindX and affects FacetTerm sharing.

## Default

Off - PxPlus attempts to use shared user slots for the session. That is, the same terminal is considered a single user regardless of the number of invocations. TCB(27) returns the User Slot Number this session is using and determines whether it is dedicated, shared, or a background task.

#### Note:
Once you set '1U' On, you cannot turn it Off unless the application terminates.

## See Also

TCB( ) Return Task Information