mmand syntax
(see <a href="ParsingSynonyms.html#Parsing">Parsing</a>).
<p>

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<h4>10.11.5.2: Example: doubling a variable</h4>


Consider the task of adding a fixed amount to a variable.  If the
variable we wish to double is `<font color="#82140F"><code>.x.</code></font>', we might write
<p>
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<