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Operating System Tools

Notes System which has an arrow on its right signifies that it is an entry point to a sub-menu, and there

can be sub-menus within every sub-menu. In this manner, the Menu System applications can be
organised as well as categorised for easy reference and access.
To use the sub-menu associated with a menu entry, move the mouse and rest it on the menu entry
in question and a sub-menu panel will appear. Figure 2.5 shows the Main Menu and Sub-menu.
Figure 2.5: Main Menu and Sub-menu

Source: http://linux.about.com/od/linux101/a/desktop01d.htm
Clicking once on a menu entry will cause an application associated with it to be launched, i.e.
executed.

2.1.2 The Panel

The long bar across the bottom of the desktop screen is known as the Panel. The Panel consists of

the Main Menu icon, the application launcher icons, a notification area and applets.
Figure 2.6: The Panel

Source: http://linux.about.com/od/linux101/a/desktop01d.htm
There are several application launcher icons which are installed by default on the Panel. Clicking
on one of these will run an application. Generally accessed applications can be added to the Panel
and those that are less frequently used can be taken off.

Did u know? The notifi cation area holds alert icons so that the user can be alerted to critical
messages.

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