encounter certain visual objects which use region structures to describe their bounds. These regions do not contain any bounds numbers. The object's drawing bounds will be used instead.)</P>
<P>
Next come one or more series of numbers. Each series describes a row, specifying which pixels of that row are part of the region. The only rows which need to be described are those which are different from the row below. The first number of each row description is the row number, its <EM>
y</EM>
 coordinate. The las