<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
<!-- This component and the accompanying materials are made available under the terms of the License 
"Eclipse Public License v1.0" which accompanies this distribution, 
and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
<!-- Initial Contributors:
    Nokia Corporation - initial contribution.
Contributors: 
-->
<!DOCTYPE concept
  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
<concept id="GUID-F25C17AC-BA88-4965-BAE8-AEF0E2EA66EC" xml:lang="en"><title>Zooming
actions</title><shortdesc>Mobile device users must be able to zoom in and out consistently
within applications on a mobile device. However the zooming actions may  differ
from one device model to another.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
<p>The product features and form factor of a mobile device determine which
zooming actions application developers should make available on it: </p>
<ul>
<li><p>If the device has an ITU-T keypad, the asterisk (*) key zooms in and
the hash mark (#) key zooms out. This functionality is not available in editors
or other states where the keys play another role. In these cases, the zoom
functions, if applicable, must be available in the <uicontrol>Options</uicontrol> menu. </p></li>
<li><p>If the device has a QWERTY or half-QWERTY keyboard, use the two topmost
keys at the top left of the keyboard for zooming in and out. For example,
on a Latin keyboard, use the Q key to zoom in and the A key to zoom out. Some
products might have zooming symbols printed on the keyboard to help users
find the zooming features. Again, the functions are not available in editors.</p></li>
<li><p>On touch devices, users can use touch stripes to zoom. Finger movement
along the stripe controls zooming. Applications may support different number
of zoom levels. It should be possible to zoom across the full range with one
swipe.</p></li>
<li><p>On touch devices with multi-touch support, users can use pinch zoom.
See <xref href="GUID-17C64C2F-9426-4B41-9F0A-23060289D644.dita">Multi-touch</xref> section
for more details on pinch in and pinch out.</p></li>
<li><p>On touch devices, some applications may support double-tapping zoom.
A double tap can toggle between zoomed and normal view, but this depends on
the application.</p></li>
</ul>
</conbody></concept>