ould compare each row with the row beneath it to determine whether it needs an entry.

</P>
<P>
<A NAME="Shapes_e.htm_IX_EOREGREC">
 </A>
The easiest region to describe is the null region, which is a special case described by a single word with the value EOREGREC (a constant whose name stands for <EM>
E</EM>
nd Of <EM>
REG</EM>
ion <EM>
REC</EM>
ord value). Describing a non-null region requires several numbers.</P>
<P>
The first four numbers of the region description give the bounds of the region. (You may 