
crosses a horizontal uta grid line, an entry of <TT
CLASS="PARAMETER"
><I
>rbuf</I
></TT
> is
incremented if <TT
CLASS="PARAMETER"
><I
>y1</I
></TT
> &gt; <TT
CLASS="PARAMETER"
><I
>y0</I
></TT
>, decremented otherwise.</P
><P
>Note that edge handling is fairly delicate. Please rtfs for
details.</P
><P
></P
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN2728"
></A
><P
></P
><TABLE
BORDER="0"
WIDTH="100%"
BGCOLOR="#FFD0D0"
CELLSPACING="0"
CELLPADDING="4"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
WIDTH="20%"
ALIGN="RIGH