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   <title>VisIt 2.1 Release Notes</title>
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<center><b><font size="6">VisIt 2.1 Release Notes</font></b></center>

<p>Welcome to VisIt's release notes page. This page describes the important
enhancements and bug-fixes that were added to this release.</p>


<p><b>Sections</b></p>
<ul>
    <li><a href="#General_Features">Features for all users</a></li>
    <li><a href="#Advanced_Features">Features for advanced users</a></li>
    <li><a href="#File_format">Changes to file format readers</a></li>
    <li><a href="#Plot_changes">Changes to plots</a></li>
    <li><a href="#Operator_changes">Changes to operators</a></li>
    <li><a href="#Expression_changes">Changes to expressions</a></li>
    <li><a href="#Query_changes">Changes to picks and queries</a></li>
    <li><a href="#Bugs_fixed">Other bug fixes</a></li>
    <li><a href="#Config_changes">Changes to machine configuration files</a></li>
    <li><a href="#Dev_changes">Changes for VisIt developers</a></li>
</ul>

<a name="General_Features"></a>
<p><b><font size="4">General features added in version 2.1</font></b></p>
<ul>
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<li>The expressions window now has buttons for managing expressions via separate configuration files.</li>
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</ul>

<a name="Advanced_Features"></a>
<p><b><font size="4">Advanced features added in version 2.1</font></b></p>
<ul>
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   <li>The visit_writer library now supports voxels and pixels.</li>
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</ul>

<a name="File_format"></a>
<p><b><font size="4">File format reader changes in version 2.1</font></b></p>
<ul>
   <li>Files formats that support time natively now can correctly report their time when concatenated inside a <i>.visit</i> file.</li>
   <li><i>BOV</i> files now properly support the <i>TIME</i> keyword.  They also support a new keyword, <i>CYCLE</i>.</li>
</ul>

<a name="Plot_changes"></a>
<p><b><font size="4">Changes to VisIt's plots in version 2.1</font></b></p>
<ul>
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  <li>The <i>Volume</i> plot now displays a histogram in the transfer function editor when doing RayCasting, matching the behavior for the other rendering types.</li>
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  <li>The <i>Volume</i> plot is now more efficient in memory and execution time
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      when doing a ray casting with logarithmic scale with a minimum value set.</li>
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</ul>

<a name="Operator_changes"></a>
<p><b><font size="4">Changes to VisIt's operators in version 2.1</font></b></p>
<ul>
</ul>

<a name="Expression_changes"></a>
<p><b><font size="4">Changes to VisIt's expression language in version 2.1</font></b></p>
<ul>
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   <li>New expressions, min_coord and max_coord, can find the smallest or 
       largest coordinate value (X, Y, Z, radius, theta, phi) within a cell.</li>
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</ul>

<a name="Query_changes"></a>
<p><b><font size="4">Changes to VisIt's picks and queries in version 2.1</font></b></p>
<ul>
<li>The <i>Integrate</i> query now works on one dimensional cross sections.</li>
</ul>

<a name="Bugs_fixed"></a>
<p><b><font size="4">Other bugs fixed in version 2.1</font></b></p>
<ul>
</ul>

<a name="Config_changes"></a>
<p><b><font size="4">Changes to configuration files in version 2.1</font></b></p>
<ul>
</ul>

<a name="Dev_changes"></a>
<p><b><font size="4">Changes for VisIt developers in version 2.1</font></b></p>
<ul>
</ul>

<p>Click the following link to view the release notes for the previous version
of VisIt: <a href="relnotes2.0.0.html">VisIt 2.0 Release Notes</a>.</p>
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