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  1. <?xml version="1.0" encoding="UTF-8" standalone="no"?>
  2. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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  4.   <head>
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  6.     <title>10.32.¬† Add Alpha Channel</title>
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  12.     <link rel="start" href="index.html" title="GNU Image Manipulation Program" />
  13.     <link rel="up" href="gimp-layer-menu.html" title="10.¬† The ‚ÄúLayers‚Äù Menu" />
  14.     <link rel="prev" href="gimp-layer-transparency-menu.html" title="10.31.¬† The ‚ÄúTransparency‚Äù Submenu of the ‚ÄúLayer‚Äù menu" />
  15.     <link rel="next" href="gimp-layer-color-to-alpha.html" title="10.33.¬† Color to Alpha" />
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  17.   <body>
  18.     <div class="navheader">
  19.       <table width="100%" summary="Navigation header">
  20.         <tr>
  21.           <th colspan="3" align="center">10.32.¬†
  22.     <span lang="en" xml:lang="en">Add Alpha Channel</span>
  23.   </th>
  24.         </tr>
  25.         <tr>
  26.           <td width="20%" align="left"><a accesskey="p" href="gimp-layer-transparency-menu.html"><img src="../images/prev.png" alt="Prev" /></a>¬†</td>
  27.           <th width="60%" align="center">10.¬†
  28.     <span lang="en" xml:lang="en">The ‚Äú<span class="quote">Layers</span>‚Äù Menu</span>
  29.   </th>
  30.           <td width="20%" align="right">¬†<a accesskey="n" href="gimp-layer-color-to-alpha.html"><img src="../images/next.png" alt="Next" /></a></td>
  31.         </tr>
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  33.       <hr />
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  35.     <div class="sect2" lang="en" xml:lang="en">
  36.       <div class="titlepage">
  37.         <div>
  38.           <div>
  39.             <h3 class="title"><a id="gimp-layer-alpha-add"></a>10.32.¬†
  40.     <span lang="en" xml:lang="en">Add Alpha Channel</span>
  41.   </h3>
  42.           </div>
  43.           <div>
  44.             <div class="revhistory">
  45.               <table border="1" width="100%" summary="Revision history">
  46.                 <tr>
  47.                   <th align="left" valign="top" colspan="3">
  48.                     <b>Revision History</b>
  49.                   </th>
  50.                 </tr>
  51.                 <tr>
  52.                   <td align="left">Revision $Revision: 2424 $</td>
  53.                   <td align="left">2007-12-02</td>
  54.                   <td align="left">j.h</td>
  55.                 </tr>
  56.               </table>
  57.             </div>
  58.           </div>
  59.         </div>
  60.       </div>
  61.       <a id="id2711207" class="indexterm"></a>
  62.       <a id="id2711224" class="indexterm"></a>
  63.       <p> 
  64.     <span class="guimenuitem">Add Alpha Channel</span>: An alpha channel is
  65.     automatically added into the Channel Dialog as soon as you add a second
  66.     layer to your image. It represents the transparency of the image. If your
  67.     image has only one layer, this background layer has no Alpha channel. In
  68.     this case, you can Add an Alpha channel with this command.
  69.   </p>
  70.       <div class="sect3" lang="en" xml:lang="en">
  71.         <div class="titlepage">
  72.           <div>
  73.             <div>
  74.               <h4 class="title"><a id="id2711252"></a>10.32.1.¬†
  75.       <span lang="en" xml:lang="en">Activate the Command</span>
  76.     </h4>
  77.             </div>
  78.           </div>
  79.         </div>
  80.         <div class="itemizedlist">
  81.           <ul type="disc">
  82.             <li>
  83.               <p>
  84.           You can access this command from the image menubar through
  85.           <span class="guimenu"><span class="accel">L</span>ayer</span> ‚Üí <span class="guisubmenu">Tr<span class="accel">a</span>nsparency</span> ‚Üí <span class="guimenuitem">Add alpha C<span class="accel">h</span>annel</span>,
  86.           and from the local pop-up submenu you get by right-clicking the
  87.           Layer Dialog.
  88.         </p>
  89.             </li>
  90.           </ul>
  91.         </div>
  92.       </div>
  93.     </div>
  94.     <div class="navfooter">
  95.       <hr />
  96.       <table width="100%" summary="Navigation footer">
  97.         <tr>
  98.           <td width="40%" align="left"><a accesskey="p" href="gimp-layer-transparency-menu.html"><img src="../images/prev.png" alt="Prev" /></a>¬†</td>
  99.           <td width="20%" align="center">
  100.             <a accesskey="u" href="gimp-layer-menu.html">
  101.               <img src="../images/up.png" alt="Up" />
  102.             </a>
  103.           </td>
  104.           <td width="40%" align="right">¬†<a accesskey="n" href="gimp-layer-color-to-alpha.html"><img src="../images/next.png" alt="Next" /></a></td>
  105.         </tr>
  106.         <tr>
  107.           <td width="40%" align="left" valign="top"><a accesskey="p" href="gimp-layer-transparency-menu.html">10.31.¬†
  108.     <span lang="en" xml:lang="en">
  109.       The ‚Äú<span class="quote">Transparency</span>‚Äù Submenu of the ‚Äú<span class="quote">Layer</span>‚Äù
  110.       menu
  111.     </span>
  112.   </a>¬†</td>
  113.           <td width="20%" align="center">
  114.             <a accesskey="h" href="index.html">
  115.               <img src="../images/home.png" alt="Home" />
  116.             </a>
  117.           </td>
  118.           <td width="40%" align="right" valign="top">¬†<a accesskey="n" href="gimp-layer-color-to-alpha.html">10.33.¬†
  119.     <span lang="en" xml:lang="en">Color to Alpha</span>
  120.   </a></td>
  121.         </tr>
  122.       </table>
  123.     </div>
  124.   </body>
  125. </html>
  126.