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<title>boolean</title>
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<h1>boolean</h1>
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<p>The boolean keyword denotes a simple basic type consisting of two distinguished values namely <a href="true.html"><b>true</b></a> or <a href="false.html"><b>false</b></a>.</p>
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<li>A Boolean expression containing logical operators (<font face="Courier New"><b>and</b></font>, <font face="Courier New"><b>not</b></font>, <font face="Courier New"><b>or</b></font>, <font
face="Courier New"><b>xor</b></font>) shall resolve to a value of type Boolean.</li>
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<li><a href="not.html"><b><font face="Courier New" color="#003258" size="4">not</font></b></a></li>
<li><a href="or.html"><b><font face="Courier New" color="#003258" size="4">or</font></b></a></li>
<li><a href="xor.html"><b><font face="Courier New" color="#003258" size="4">xor</font></b></a></li>
<li><a href="true.html"><b><font face="Courier New" color="#003258" size="4">true</font></b></a></li>
<li><a href="false.html"><b><font face="Courier New" color="#003258" size="4">false</font></b></a></li>
<li><a href="ischosen.html"><b><font face="Courier New" color="#003258" size="4">ischosen</font></b></a></li>
<li><a href="ispresent.html"><b><font face="Courier New" color="#003258" size="4">ispresent</font></b></a></li>
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<h3 align="center"><font face="Courier New" color="#003258" size="5"><b>boolean</b></font></h3>
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<p>Example 1:
<p><font face="Courier New">const boolean c_I_can_read_this := true;<br>
</font>
<p>The constant defined is called c_I_can_read_this and has the value true.</p>
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<p><a HREF="BNF.html#booleankeyword">BNF definition</a> of <font face="Courier New">boolean</font> <br>
<a HREF="BNF.html#booleanvalue">BNF definition</a> of boolean value</p>
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