hline

<..html latex halign..>
 \def\:temp{\a:hline}
 \HLet\hline=\:temp
 \NewConfigure{hline}[1]{\c:def\a:hline{#1}}
 -_-_-

<..hline body for array/tabular..>
 \append:def\hline:s{\a:HBorder}%
 \def\:tempb{\ifnum \tmp:cnt<\ar:cnt
     \advance\tmp:cnt by 1 \append:def\hline:s{\b:HBorder}%
     \expandafter\:tempb
   \fi }
 \tmp:cnt=0 \:tempb
 \append:def\hline:s{\c:HBorder}\global\let\hline:s=\hline:s
 -_-_-

<..init for hlines..>
 \global\let\hline:s=\empty
 -_-_-