### Single and Multiple Session Debugging

The remote debug driver for workstation-to-workstation debugging (irmtdbg) runs on the remote workstation, and waits for requests from a debugger user interface on another workstation to start an application for debugging. irmtdbg executes in single session mode by default. In this mode, when you close the debugger (for example, by pressing F3), the remote debug driver will also exit.

In multiple session mode, when you close the debugger, the remote debug driver does not terminate; instead, it re-initializes itself and waits for a new connection. If you use this mode, you must terminate the remote debug driver from the remote machine. For example, on OS/2 and Windows, terminate the driver's process or use Ctrl-C or Ctrl-Break.