Revit uses background processes to carry out performance intensive tasks so you can continue working in the model.
Some processes in
Revit run in the background so you can continue working and not have to wait for
Revit to complete the current operation.
On the Status Bar, click Background Processes to display a list of the processes running in the background. Currently, the following
Revit features operate as background processes:
Note: A warning icon displays for the Background Processes icon when Background Processes is disabled. See
Misc Settings in Revit.ini.