The SAS can be operated using the command line. Alternatively, the SAS Graphical User Interface (GUI) provides an easy mean of running tasks without memorizing commands. The SAS GUI is specially intended for interactive analysis of XMM data. The SAS main GUI is started by typing sas on the command line. This should display a main window similar to the following:
The upper half of the window is a task browser, which allows the user to select and run tasks. The lower half of the window is a log pane, which shows messages from tasks, including warning and error indications. At the very bottom of the window is a message pane which shows transient messages.
