erical value <TT>numerical-vl</TT> may occupy up to 12  characters in
data    fields&nbsp;4 and (optionally)     6.  Using  the    terminology of
Section&nbsp;<A HREF="node20.html#S2.2.6">3.2.6</A>, the extra bound
is taken to imply the inequality
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 $0 \leq  y_k  \leq |\mbox{field~4 or  6}|$
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 ALT="$0 \leq y_k \leq \vert\mbox{field~4 or 6}\vert$"> on the  artificial variable
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 WIDTH="14" HEIGHT="11" ALIGN="MIDDLE" BOR