The upper half of the main window is called the Task Browser, and is used to select and run SAS tasks.
Double clicking on a task causes the corresponding parameter dialog window to pop-up so that parameters can be entered and the task started.
Clicking on any of the column headings sorts the list alphabetically on that field. Clicking again reverses the order. For example, clicking on the "group" heading groups all tasks by type and /or instrument.
When a task is selected by double clicking, a number appears in the "history" column. This number is incremented as successive tasks are run. Clicking on the "history" column heading sorts the list in the order in which the tasks were run (putting them in the bottom or the top of the list, depending if one or two clicks); this makes it easier to locate recently run tasks.
It is possible to locate a task quickly by typing the first few characters of its name. First click in the task browser, or use the 'Tab' key to select the browser. To locate another task, first click on another task to reset the search.