</TABLE>
<P>
<H3><FONT COLOR="#883300">Options Database Key</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0"><TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-st_matstructure &lt;str&gt; </B></TD><TD>&nbsp;- Indicates the structure flag, where &lt;str&gt; is one
of 'same' (matrices have the same nonzero pattern), 'different'
(different nonzero pattern) or 'subset' (pattern is a subset of the
first one).
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
By default, the sparsit