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<B>EXPREAD</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>operator</B><P>
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syntax: </H3>
<em>expread</em>() 
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<em>expread</em>reads one well-formed expression from the current input 
buffer and returns its value. 
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examples: </H3>
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expread(); a+b; 

  A + B

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