VTech PC Mouse User Manual page 12

Use these keys when inputting answers in number related
...
do
activities or for creating melodies in the Melody Maker activity or
selecting musics in Music Box activity.
[Alphabet keys] Use these keys when inputting answers in letter and
word related activities. They follow the same pattern as standard
computers and typewriters.
[Left mouse button] This button acts as
the enter button or it can be used
to click on an on-screen object.
[Right mouse button] The function of this
button is the same as the CHANGE
key.
Activity Descriptions:
List of the 25 activities
Mouse operation
Mouse Skills
Munch It Up
Learning Shapes
Maze Challenge
Matching Shapes
Art and Music
Melody Maker
Music Box
Connect the Dots
Art Studio
Puzzle Pictures
Letter and Word
Letter Order
Beginning Letters
Magic Word
Missing Letter
Odd One Out
Games
Memory Challenge
Crazy Shape Puzzle
Which One's Different
Animal Sound Match
Look Alikes
11
Right mouse button
Left mouse button
Number
Beginning Counting
Counting
Counting Challenge
Addition
Subtraction