For programs that do not support multiple open documents, clicking its icon will typically result in the task switch behaviour.
For example, filing systems will allow the naming and formatting of disks, as well as an option to open a window displaying free space.
Most applications will provide access to an Info window (displaying the version number and copyright information), online help, and a quit option.
Amongst these was one called 'TinyDirs', which allowed users to dock applications and directories on the icon bar for convenient access.
[8] RISC OS 3 in 1991 introduced the Apps icon to the left and replaced the Task Manager's Archimedes logo with the Acorn nut.
Apps provided access to the ROM based applications and the functionality of 'TinyDirs' was replaced by the OS command AddTinyDir.
The "nested Wimp" introduced in 1998 (as a soft load for existing machines) added the feature to temporarily bring the icon bar to the front of the window stack by moving the pointer to the bottom of the screen (previously this required 'Shift-F12' on the keyboard).
Where appropriate, Adjust (right mouse button) clicks perform consistent operations such as loading the configuration choices for parts of the system.