Using Contextual Menus - Canon 6864A001AA - PowerShot A20 2MP Digital Camera Manual

Chapter 2
What is ImageBrowser ?
When you hold down the [control] key and click the mouse
button, a menu is displayed. This is a contextual menu.
In ImageBrowser, you can access many useful functions
through contextual menus.
For example, when you hold down the [control] key and click an
image, the following contextual menu appears.
Click the mouse button anywhere in
the window while holding down the
[control] key to display the contextual
menu.
16 ImageBrowser Software Guide

Using Contextual Menus

A contextual menu is, as its name implies, a menu whose
option vary according to the context within which it is used. It is
a collection of the most commonly used buttons and
commands that apply to a given situation.
Contextual menus allow you to use ImageBrowser more
efficiently. When you feel comfortable with ImageBrowser, try
using the contextual menus in different situations and you will
be impressed with their convenience.
Note that, in general, this manual does not cover operations
using contextual menus. (This is because explaining the many
menu variations would take too many pages.)