The user can perform the described analysis (instead of typing commands) also with the graphical user interface (GUI) of the SAS. In general, the analysis via the GUI might be judged more user friendly for an interactive analysis session. But the GUI, too, allows the saving of performed analysis steps in a log file (default name ``sas_log'') as well as the saving of performed commands as a shell script (via the ``File: Save as script'' menu) which later can be used for reprocessing.
For that purpose, the sas command shall be run first. The SAS GUI appears and the user can select a task. The xmmselect task interacts in a convenient way with the evselect task to extract images, spectra, timeseries or filtered event lists.