If Show icons checked Task Killer draws an application icon from the left of the application name. If option is checked menu is created a bit slower then without icons.

If option One column menu (scrolling) is checked then popup menu consists of one column with scrolling buttons otherwise the popup menu is divided into several columns.

The Drop-down box near the label "Sort:" allows you to choose type of sorting (by name or by creation order).

The editbox near the label "Truncate menu to" allows to choose maximum menu width in characters.

The treeview box allows set up items order and view of the popup menu (tasks, windows, services).