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                      <meta name="author" value="Adam Murdoch">
  <meta name="email" value="adammurdoch@apache.org">
        
      <title>Apache Myrmidon - Myrmidon</title>
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                <p><strong>Myrmidon</strong></p>
    <ul>
          <li>      <a href="./index.html">Introduction</a>
  </li>
        </ul>
            </td>
          <td align="left" valign="top">
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    <tr><td bgcolor="#525D76">
      <font color="#ffffff" face="arial,helvetica,sanserif">
        <a name="What is Myrmidon?"><strong>What is Myrmidon?</strong></a>
      </font>
    </td></tr>
    <tr><td>
      <blockquote>
                        <p>
Myrmidon is one of the Ant 2 proposals currently in development.  You can
read more about the goals of Ant 2
<a href="http://jakarta.apache.org/ant/ant2/">here</a>.
</p>
                                <p>
Myrmidon is a general-purpose <i>task engine</i>.  It contains the basic
building blocks for assembling any sort of task-based tool.  Ant 2
is an example of such a tool, which could be assembled using the Myrmidon task
engine, and a library of build related tasks.
</p>
                                <p>
Currently, Myrmidon is a prototype of what a task engine might look.  It
includes a small set of tasks and data types.  We are currently porting
many of the Ant 1.x tasks to the Myrmidon task engine.
</p>
                                <p>
</p>
                                  <table border="0" cellspacing="0" cellpadding="2" width="100%">
    <tr><td bgcolor="#828DA6">
      <font color="#ffffff" face="arial,helvetica,sanserif">
        <a name="Differences to Ant 1.x"><strong>Differences to Ant 1.x</strong></a>
      </font>
    </td></tr>
    <tr><td>
      <blockquote>
                        <p>Some of the differences between Ant 1.x and Myrmidon:</p>
                                <ul>

<li>
Groups of tasks can be assembled into self-describing <i>antlib</i> task
libraries.  This makes it very easy to distribute and install tasks and data-types.
</li>

<li>
A project can import other projects, and reference their targets.
</li>

<li>
Changes to the property model:
<ul>
    <li>Properties and data type references now share the same namespace.</li>
    <li>Properties are mutable.</li>
    <li>Properties are scoped into global, local, and parent contexts.</li>
</ul>
</li>

<li>
Changes to task and data-type API:
<ul>
    <li>An interface based API, through which a task interacts with the
    task engine, and the services it provides.</li>
    <li>A well-defined object lifecycle.</li>
    <li>Polymorphic types are supported when objects are configured.</li>
    <li>Reference handling is handled automatically when objects are configured.</li>
    <li>Aspects can be used to decorate tasks, to add facilities like logging,
    error handling, or user preferences.</li>
</ul>
</li>

<li>
A set of well-defined services and APIs have been introduced, to allow
tasks to do their work without depending on other tasks:
<ul>
    <li>Execute external commands.</li>
    <li>Execute other tasks.</li>
    <li>Manage ClassLoaders and Class-paths.</li>
    <li>Virtual file system (in progress).</li>
    <li>Execute Java applications (in progress).</li>
    <li>...</li>
</ul>
</li>

</ul>
                    </blockquote>
    </td></tr>
  </table>
                    </blockquote>
    </td></tr>
  </table>
        <table border="0" cellspacing="0" cellpadding="2" width="100%">
    <tr><td bgcolor="#525D76">
      <font color="#ffffff" face="arial,helvetica,sanserif">
        <a name="Building Myrmidon"><strong>Building Myrmidon</strong></a>
      </font>
    </td></tr>
    <tr><td>
      <blockquote>
                        <p>
First, you will need to fetch the Myrmidon source from CVS.  The source
can be source in the <code>proposal/myrmidon</code> directory of the
Ant source tree.  You should check out the <code>jakarta-ant</code> CVS
module, as described
<a href="http://jakarta.apache.org/site/cvsindex.html">here</a>.
</p>
                                <p>
To build Myrmidon, use the <code>build.xml</code> build script.  You will need
to use Ant 1.4.1 or later.  The default target builds the Myrmidon distribution
into the <code>dist</code> directory.  The distribution is a ready-to-run
installation of Myrmidon.
</p>
                    </blockquote>
    </td></tr>
  </table>
        <table border="0" cellspacing="0" cellpadding="2" width="100%">
    <tr><td bgcolor="#525D76">
      <font color="#ffffff" face="arial,helvetica,sanserif">
        <a name="Running Myrmidon"><strong>Running Myrmidon</strong></a>
      </font>
    </td></tr>
    <tr><td>
      <blockquote>
                        <p>
To run Myrmidon, use one of the following methods:
</p>
                                  <table border="0" cellspacing="0" cellpadding="2" width="100%">
    <tr><td bgcolor="#828DA6">
      <font color="#ffffff" face="arial,helvetica,sanserif">
        <a name="Launcher Script"><strong>Launcher Script</strong></a>
      </font>
    </td></tr>
    <tr><td>
      <blockquote>
                        <p>
On Windows and Unix platforms, you can use the <code>ant</code> script
in the distribution's <code>bin</code> directory.  The following environment
variables can be used, but are not required (except on Windows 9x - see below).
</p>
                                <p>

</p>
                                  <table>
              <tr>
                  <td bgcolor="#039acc" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Variable
        </font>
  </td>
                      <td bgcolor="#039acc" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Description
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          JAVA_HOME
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          The directory that the JDK is installed in.
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          JAVACMD
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          The command to use to start the JVM.  Defaults to <code>java</code>.
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          ANT_HOME
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          
            The directory containing the Myrmidon distribution.  This must be
            set when running on Windows 95, 98 or Me.
        
        </font>
  </td>
      </tr>
        </table>
                    </blockquote>
    </td></tr>
  </table>
                                  <table border="0" cellspacing="0" cellpadding="2" width="100%">
    <tr><td bgcolor="#828DA6">
      <font color="#ffffff" face="arial,helvetica,sanserif">
        <a name="Executable Jar File"><strong>Executable Jar File</strong></a>
      </font>
    </td></tr>
    <tr><td>
      <blockquote>
                        <p>
The Myrmidon distribution includes an executable Jar file, which can be used
to run Myrmidon.  Use the following command:
</p>
                                <pre>
prompt&gt; <i>java</i> -jar <i>ant-home</i>/bin/myrmidon-launcher.jar <i>options</i>
</pre>
                    </blockquote>
    </td></tr>
  </table>
                                <p>
Run Myrmidon with the <code>-h</code> command-line option for a list of
the command-line options that are available.
</p>
                    </blockquote>
    </td></tr>
  </table>
        <table border="0" cellspacing="0" cellpadding="2" width="100%">
    <tr><td bgcolor="#525D76">
      <font color="#ffffff" face="arial,helvetica,sanserif">
        <a name="Project File"><strong>Project File</strong></a>
      </font>
    </td></tr>
    <tr><td>
      <blockquote>
                        <p>
The project file format is very similar to that of Ant 1.  The root element of
the project file must be a <code>&lt;project&gt;</code> element.  It can
take the following attributes:
</p>
                                  <table>
              <tr>
                  <td bgcolor="#039acc" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Attribute
        </font>
  </td>
                      <td bgcolor="#039acc" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Description
        </font>
  </td>
                      <td bgcolor="#039acc" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Default Value
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          name
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          The project name.
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          The name of the project file, with the extension removed.
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          basedir
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          The base directory for the project.
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          The directory containing the project file.
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          default
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          The name of the default target.
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          <code>main</code>
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          version
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          The project file version that the project is written for.
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          None, must be <code>2.0</code>
        </font>
  </td>
      </tr>
        </table>
                                <p>
A <code>&lt;project&gt;</code> element can contain the following elements,
in the order given below:
</p>
                                <ul>
<li><a href="#Project References"><code>&lt;projectref&gt;</code></a></li>
<li><a href="#Library Imports"><code>&lt;import&gt;</code></a></li>
<li><a href="#Implicit Tasks">Implicit tasks</a></li>
<li><a href="#Targets"><code>&lt;target&gt;</code></a></li>
</ul>
                                  <table border="0" cellspacing="0" cellpadding="2" width="100%">
    <tr><td bgcolor="#828DA6">
      <font color="#ffffff" face="arial,helvetica,sanserif">
        <a name="Project References"><strong>Project References</strong></a>
      </font>
    </td></tr>
    <tr><td>
      <blockquote>
                        <p>Project references allow the project to import, or reference, other projects.
A <code>&lt;projectref&gt;</code> element takes the following attributes:</p>
                                  <table>
              <tr>
                  <td bgcolor="#039acc" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Attribute
        </font>
  </td>
                      <td bgcolor="#039acc" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Description
        </font>
  </td>
                      <td bgcolor="#039acc" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Default Value
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          name
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          The name to use to identify the referenced project.
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Required
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          location
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          The path to the project file to reference.
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Required
        </font>
  </td>
      </tr>
        </table>
                                <p>
The targets of a referenced project can be used in the <code>depends</code> list
of a target in the referencing project, using the following syntax:
<code><i>project-name</i>-&gt;<i>target-name</i></code>.
</p>
                    </blockquote>
    </td></tr>
  </table>
                                  <table border="0" cellspacing="0" cellpadding="2" width="100%">
    <tr><td bgcolor="#828DA6">
      <font color="#ffffff" face="arial,helvetica,sanserif">
        <a name="Library Imports"><strong>Library Imports</strong></a>
      </font>
    </td></tr>
    <tr><td>
      <blockquote>
                        <p>Library imports allow the project to import the tasks and data-types from an
antlib.  An <code>&lt;import&gt;</code> element takes the following attributes:</p>
                                  <table>
              <tr>
                  <td bgcolor="#039acc" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Attribute
        </font>
  </td>
                      <td bgcolor="#039acc" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Description
        </font>
  </td>
                      <td bgcolor="#039acc" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Default Value
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          library
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          The name of the library to import.  The <code>ext</code> directory
        of the Myrmidon distribution is searched for a library file with
        the given name, and an <code>atl</code> extension.
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Required
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          type
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          The type of definition to import.  Values include <code>task</code>,
        and <code>data-type</code>.
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          None
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          name
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          The name of the type to import.
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          None
        </font>
  </td>
      </tr>
        </table>
                                <p>
If the <code>type</code> and <code>name</code> attributes are not provided,
the entire contents of the antlib are imported.
</p>
                    </blockquote>
    </td></tr>
  </table>
                                  <table border="0" cellspacing="0" cellpadding="2" width="100%">
    <tr><td bgcolor="#828DA6">
      <font color="#ffffff" face="arial,helvetica,sanserif">
        <a name="Implicit Tasks"><strong>Implicit Tasks</strong></a>
      </font>
    </td></tr>
    <tr><td>
      <blockquote>
                        <p>Implicit tasks are run before any of the project's targets are run.</p>
                    </blockquote>
    </td></tr>
  </table>
                                  <table border="0" cellspacing="0" cellpadding="2" width="100%">
    <tr><td bgcolor="#828DA6">
      <font color="#ffffff" face="arial,helvetica,sanserif">
        <a name="Targets"><strong>Targets</strong></a>
      </font>
    </td></tr>
    <tr><td>
      <blockquote>
                        <p>Targets are the same as Ant 1.x.</p>
                    </blockquote>
    </td></tr>
  </table>
                    </blockquote>
    </td></tr>
  </table>
        <table border="0" cellspacing="0" cellpadding="2" width="100%">
    <tr><td bgcolor="#525D76">
      <font color="#ffffff" face="arial,helvetica,sanserif">
        <a name="Tasks"><strong>Tasks</strong></a>
      </font>
    </td></tr>
    <tr><td>
      <blockquote>
                        <p>
The following table lists the current set of tasks.  You can find example
usages of these tasks in the sample project file <code>src/make/sample.ant</code>.
</p>
                                  <table>
                    <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          fail
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Causes the build to fail.
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          if
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Conditionally executes a set of tasks.
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          load-properties
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Loads a set of properties from a file.
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          log
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Writes a log message.
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          property
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Sets a property.
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          try-catch
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Runs a set of tasks, with a provided error and clean-up handler.
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          converter-def
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Register a type converter.  These are used when configuring a task
        or data-type from attributes.
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          type-def
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Register a task or data-type.
        </font>
  </td>
      </tr>
                  <tr>
                  <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          import
        </font>
  </td>
                      <td bgcolor="#a0ddf0" colspan="" rowspan="" 
      valign="top" align="left">
    <font color="#000000" size="-1" face="arial,helvetica,sanserif">
          Register the contents of an antlib.
        </font>
  </td>
      </tr>
        </table>
                    </blockquote>
    </td></tr>
  </table>
              </td>
        </tr>

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          Copyright &#169; 2000-2002, Apache Software Foundation
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