The mouse buttons
The mouse used with all RISC OS computer systems, has three buttons. Each of these buttons
has a particular role to play. The button which does most of the work is named SELECT; the
middle button, when clicked, always produces a menu, and so is called the MENU button;
and the remaining button is known as ADJUST, because it performs a number of alternative
functions complimentary to the other two. Using the mouse configuration tool (described
later) you can set the mouse to be either for left-handed or right-handed users (by swapping
the mouse buttons so the SELECT falls under the index finger of your dominant hand)
Mouse techniques
Pressing and releasing a mouse button down is known as 'clicking' it. In fact, when you
depress a mouse button you will probably hear a 'clicking' sound. You click a mouse button
to activate the function of that button when the pointer is over the desired area of the screen.
a short time (configurable using the Mouse configuration tool) the pointer will revert to the
default icon. If you click the mouse a second time whilst the pointer icon is in its double-
headed state, then this is considered a double-click.
For example,
A single click of SELECT on a device icon on the Icon Bar (such as the Hard disc, or Floppy
disc) will open a filer directory window showing the content of that device.
A single click of SELECT on an application icon on the Icon Bar will open a (new)
document for that particular program.
A single click of MENU will open a menu of options (the MENU button always opens a
menu on the screen - where the pointer is located at the time of your clicking the MENU
button determines what the menu relates to (clicking MENU on the Floppy disc icon, for
example, will open a menu list of options relating to the Floppy disc drive).
A single. click of ADJUST will select an item (as SELECT does) but subsequent selections
using ADJUST will add to the selection allowing you to select more than one object (this
applies to both files and directories in filer directory windows and also multiple objects within
a document such as separate vector-based shapes in a drawfile.
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