Finger Panning; Pinch Zooming - HTC HD2 User Manual

• To auto-scroll, flick your finger left or right. Tap the screen to stop
scrolling.

Finger panning

You can use finger panning to move to and view other parts of a
zoomed photo, Web page, document, or an email. To pan, press and
hold on the touch screen and then drag your finger in any direction.

Pinch zooming

When you are viewing Web pages, photos, messages, or documents,
zoom in and out freely with just a simple pinch of your fingers. Using
your thumb and index finger, press on the touch screen and spread
your fingers apart to zoom in. Pinch your fingers together to zoom
out.
Zooming in
Chapter 1 Getting Started 
Zooming out