The Open VISA Session Monitor VI is useful if you are involved with interactive or programmatic debugging of your instrument driver application. During your debugging you might discover that you have many open VISA sessions that need to be closed. If you open a significant number of the VISA sessions without closing them, you decrease the available memory resources. To close all the open sessions quickly, you can run the Open VISA Session Monitor VI in the labview/vi.lib/utility/visa.llb library. Alternatively, you could save your work, exit, and re-enter LabVIEW. Exiting LabVIEW closes all your open VISA sessions.