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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>
  5.     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  6.     <title>18.14.┬áEnvironment</title>
  7.     <link rel="stylesheet" href="gimp-help-plain.css" type="text/css" />
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  10.     <link rel="start" href="index.html" title="GIMP User Manual" />
  11.     <link rel="up" href="ch04s18.html" title="18.┬áPreferences" />
  12.     <link rel="prev" href="ch04s18s13.html" title="18.13.┬áWindow Managment" />
  13.     <link rel="next" href="ch04s18s15.html" title="18.15.┬áFolders" />
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  15.   <body>
  16.     <div xmlns="" class="navheader">
  17.       <table width="100%" summary="Navigation header">
  18.         <tr>
  19.           <th colspan="3" align="center" id="chaptername">18.┬áPreferences</th>
  20.         </tr>
  21.         <tr>
  22.           <td width="20%" align="left"><a accesskey="p" href="ch04s18s13.html">Prev</a>┬á</td>
  23.           <th width="60%" align="center" id="sectionname">18.14.┬áEnvironment</th>
  24.           <td width="20%" align="right">┬á<a accesskey="n" href="ch04s18s15.html">Next</a></td>
  25.         </tr>
  26.       </table>
  27.       <hr />
  28.     </div>
  29.     <div class="sect2" lang="en" xml:lang="en">
  30.       <div class="titlepage">
  31.         <div>
  32.           <div>
  33.             <h3 class="title"><a id="gimp-prefs-environment"></a>18.14.┬áEnvironment</h3>
  34.           </div>
  35.         </div>
  36.       </div>
  37.       <a id="id3459591" class="indexterm"></a>
  38.       <div class="informalfigure">
  39.         <div class="mediaobject">
  40.           <img src="../images/preferences/prefs-environment.png" />
  41.           <div class="caption">
  42.             <p>
  43.         Environment Preferences
  44.       </p>
  45.           </div>
  46.         </div>
  47.       </div>
  48.       <p>
  49.     This page lets you customize the amount of system memory allocated
  50.     for various purposes.  It also allows you to disable the
  51.     confirmation dialogs that appear when you close unsaved images,
  52.     and to set the size of thumbnail files that GIMP produces.
  53.   </p>
  54.       <div class="simplesect" lang="en" xml:lang="en">
  55.         <div class="titlepage">
  56.           <div>
  57.             <div>
  58.               <h4 class="title"><a id="id3459638"></a>Options</h4>
  59.             </div>
  60.           </div>
  61.         </div>
  62.         <div class="variablelist">
  63.           <p class="title">
  64.             <b>Resource Consumption</b>
  65.           </p>
  66.           <dl>
  67.             <dt>
  68.               <span class="term">Minimal number of undo levels</span>
  69.             </dt>
  70.             <dd>
  71.               <p>
  72.             GIMP allows you to undo most actions by maintaining an "Undo
  73.             History" for each image, for which a certain amount of
  74.             memory is allocated.  Regardless of memory usage, however,
  75.             GIMP always permits some minimal number of the most recent
  76.             actions to be undone:  this is the number specified here.
  77.             See <a href="ch02s04s05.html" title="4.5.┬áUndoing">Undoing</a> for more
  78.             information about GIMP's Undo mechanism.
  79.           </p>
  80.             </dd>
  81.             <dt>
  82.               <span class="term">Maximum undo memory</span>
  83.             </dt>
  84.             <dd>
  85.               <p>
  86.             This is the amount of undo memory allocated for each image.
  87.             If the Undo History size exceeds this, the oldest points are
  88.             deleted, unless this would result in fewer points being
  89.             present than the minimal number specified above.
  90.           </p>
  91.             </dd>
  92.             <dt>
  93.               <span class="term">Tile cache size</span>
  94.             </dt>
  95.             <dd>
  96.               <p>
  97.             This is the amount of system RAM allocated for GIMP image
  98.             data.  If GIMP requires more memory than this, it begins to
  99.             swap to disk, which may in some circumstances cause a
  100.             dramatic slowdown.  You are given an opportunity to set this
  101.             number when you install GIMP, but you can alter it here. See
  102.             <a href="ch02.html#gimp-using-setup-tile-cache" title="How to Set Your Tile Cache">How to Set Your
  103.             Tile Cache</a> for more information.
  104.           </p>
  105.             </dd>
  106.             <dt>
  107.               <span class="term">Maximum new image size</span>
  108.             </dt>
  109.             <dd>
  110.               <p>
  111.             This is not a hard contraint:  if you try to create a new
  112.             image larger than the specified size, you are asked to
  113.             confirm that you really want to do it.  This is to prevent
  114.             you from accidentally creating images much larger than you
  115.             intend, which can either crash GIMP or cause it to respond
  116.             verrrrrrrry slowwwwwwwwly.
  117.           </p>
  118.             </dd>
  119.           </dl>
  120.         </div>
  121.         <div class="variablelist">
  122.           <p class="title">
  123.             <b>Image Thumbnails</b>
  124.           </p>
  125.           <dl>
  126.             <dt>
  127.               <span class="term">Size of thumbnails</span>
  128.             </dt>
  129.             <dd>
  130.               <p>
  131.               This options allows you to set the size of the thumbnails
  132.               shown in the File Open dialog (and also saved for possible
  133.               use by other programs).  The options are "None", 
  134.               "Normal (128x128)", and "Large (256x256)".
  135.             </p>
  136.             </dd>
  137.             <dt>
  138.               <span class="term">Maximum filesize for thumbnailing</span>
  139.             </dt>
  140.             <dd>
  141.               <p>
  142.               If an image file is larger than the specified maximum size,
  143.               GIMP will not generate a thumbnail for it.  This options 
  144.               allows you to prevent thumbnailing of extremely large
  145.               image files from slowing GIMP to a crawl.
  146.             </p>
  147.             </dd>
  148.           </dl>
  149.         </div>
  150.         <div class="variablelist">
  151.           <p class="title">
  152.             <b>Saving Images</b>
  153.           </p>
  154.           <dl>
  155.             <dt>
  156.               <span class="term">Confirm closing of unsaved images</span>
  157.             </dt>
  158.             <dd>
  159.               <p>
  160.               Closing an image is not undoable, so by default GIMP asks
  161.               you to confirm that you really want to do it, whenever it
  162.               would lead to a loss of unsaved changes.  You can disable
  163.               this if you find it annoying; but then of course you are
  164.               responsible for remembering what you have and have not
  165.               saved.
  166.             </p>
  167.             </dd>
  168.             <dt>
  169.               <span class="term">Size of thumbnail files</span>
  170.             </dt>
  171.             <dd>
  172.               <p>
  173.               Here you can set the size of thumbnail files that GIMP
  174.               generates.  Regardless of this value, GIMP will still be
  175.               capable of <span class="emphasis"><em>reading</em></span> thumbnail files of
  176.               any size.
  177.             </p>
  178.             </dd>
  179.           </dl>
  180.         </div>
  181.       </div>
  182.     </div>
  183.     <div class="navfooter">
  184.       <hr />
  185.       <table width="100%" summary="Navigation footer">
  186.         <tr>
  187.           <td width="40%" align="left"><a accesskey="p" href="ch04s18s13.html">Prev</a>┬á</td>
  188.           <td width="20%" align="center">
  189.             <a accesskey="u" href="ch04s18.html">Up</a>
  190.           </td>
  191.           <td width="40%" align="right">┬á<a accesskey="n" href="ch04s18s15.html">Next</a></td>
  192.         </tr>
  193.         <tr>
  194.           <td width="40%" align="left" valign="top">18.13.┬áWindow Managment┬á</td>
  195.           <td width="20%" align="center">
  196.             <a accesskey="h" href="index.html">Home</a>
  197.           </td>
  198.           <td width="40%" align="right" valign="top">┬á18.15.┬áFolders</td>
  199.         </tr>
  200.       </table>
  201.     </div>
  202.   </body>
  203. </html>
  204.