Explicit conversions
are required when different numeric types are mixed in an expression
or assignment. For instance, <code>int32</code> and <code>int</code>
are not the same type even though they may have the same size on a
particular architecture.
</p>

<h3 id="String_types">String types</h3>

<p>
A <i>string type</i> represents the set of string values.