eline"> A <a href="ref-glossary.html#gl:form">form</a> which is suitable for use as a <a href="ref-glossary.html#id88">generalized&nbsp;reference</a>
</td></tr><tr valign="top"><td valign="baseline" nowrap><i>decrement</i></td><td valign="baseline">&nbsp;&nbsp;&nbsp;&nbsp;</td><td valign="baseline"> A number (default is <code>1</code>)
</td></tr><tr valign="top"><td valign="baseline" nowrap><i>original-value</i></td><td valign="baseline">&nbsp;&nbsp;&nbsp;&nbsp;</td><td valign="baseline"> A number
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