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- <h3 class="section">7.34 <code>.fail <var>expression</var></code></h3>
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- <p>Generates an error or a warning. If the value of the <var>expression</var> is 500
- or more, <code>as</code> will print a warning message. If the value is less
- than 500, <code>as</code> will print an error message. The message will
- include the value of <var>expression</var>. This can occasionally be useful inside
- complex nested macros or conditional assembly.
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