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| <h2 class="chapter">6 Expressions</h2> |
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| <p><a name="index-expressions-241"></a><a name="index-addresses-242"></a><a name="index-numeric-values-243"></a>An <dfn>expression</dfn> specifies an address or numeric value. |
| Whitespace may precede and/or follow an expression. |
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| <p>The result of an expression must be an absolute number, or else an offset into |
| a particular section. If an expression is not absolute, and there is not |
| enough information when <samp><span class="command">as</span></samp> sees the expression to know its |
| section, a second pass over the source program might be necessary to interpret |
| the expression—but the second pass is currently not implemented. |
| <samp><span class="command">as</span></samp> aborts with an error message in this situation. |
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| <li><a accesskey="1" href="Empty-Exprs.html#Empty-Exprs">Empty Exprs</a>: Empty Expressions |
| <li><a accesskey="2" href="Integer-Exprs.html#Integer-Exprs">Integer Exprs</a>: Integer Expressions |
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