From time to time you will notice a system wait dialog window appear:
This window indicates that the system is busy and gives information as to the process the system is currently undertaking. For example, in the dialog window above the system is returning the stage from the Load/Unload position back to the sample analysis position. The user must wait until this process is finished before continuing to use the microscope. You may stop the process at any point by clicking the Abort button, but should not do so unless without good reason—usually, when the system is busy, a necessary process is taking place.