Lenovo C315 All-In-One - Manual (Page 29)

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User Guide
2.2 Lenovo Touch screen User Gesture Instructions
The Lenovo Touch screen supports single touch, as well as multi-touch, like
rotation, zoom in and zoom out. The user can transmit coordinate information
to the computer by touching the screen. The touch screen uses a pressureless
touchrecognition method, which, in order for you to operate the main computer,
only requires you to gently touch the items on the screen with your fingers or make
a simple hand gesture.
2.2.1 Basic Hand Gestures
1. Single Click/Double Click
For the desired item on the touch screen, use one finger to touch it very gently one
or two times, thereby performing the single click or double click operation. This is
similar to the action of clicking the left mouse button.