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 Copyright (c) 2000-2021 Ericsson Telecom AB
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 All rights reserved. This program and the accompanying materials
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 are made available under the terms of the Eclipse Public License v2.0
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 which accompanies this distribution, and is available at
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 https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.html
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 Contributors:
  Baji, Laszlo
  Balasko, Jeno
  Farkas, Laszlo
  Szabados, Kristof
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<head>
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<title>in</title>
</head>
<body bgcolor="#DAD3C5" vlink="#0094D2" link="#003258">
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<p><br clear="all">
</p>
<hr>
<h1>in</h1>
<hr align="left" width="75%">
<p>The keyword is used in conjunction with other keywords to refer to the incoming direction.
<ol>
  <li>&nbsp;together with the keyword <b><font face="Courier New" color="#003258" size="4">function</font></b> it is used to designate parameters that <a href="function.html#inout"
    target="_blank"><b>may only be read</b></a> inside the parameterized function;</li>
  <li>together with the keyword <b><font face="Courier New" color="#003258" size="4">port</font></b> it is used to designate messages or procedures that a given port <a href="port.html#Example"
    target="_blank"><b>may only receive</b></a>;</li>
  <li>&nbsp;together with the keyword <b><font face="Courier New" color="#003258" size="4">signature</font></b> it is used to designate parameters that <a href="signature.html#parameter_list"
    target="_blank"><b>may only be read</b></a> by the called procedure.</li>
</ol>
<hr align="left" width="50%">
<p>Related keywords:</p>
<ul>
  <li><a href="function.html"><b><font face="Courier New" color="#003258" size="4">function</font></b></a></li>
  <li><a href="port.html"><b><font face="Courier New" color="#003258" size="4">port</font></b></a></li>
  <li><a href="signature.html"><b><font face="Courier New" color="#003258" size="4">signature</font></b></a></li>
</ul>
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<center>
<table border="0" width="90%" bgcolor="#FFB599" cellpadding="4">
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    <td width="100%">
    <h3 align="center"><font face="Courier New" color="#003258" size="5"><b>in</b></font>...</h3>
    </td>
  </tr>
</table>
</center>
</div>
<hr align="left" width="25%">
<hr align="left" width="25%">
<p><a HREF="BNF.html#formalvaluepar">BNF definition</a> of <font face="Courier New">in</font> (sense 1 and 3)<br>
<a HREF="BNF.html#direction">BNF definition</a> of <font face="Courier New">in</font> (sense 2)</p>
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