bool cpdf_rect ( int pdf_document, float x_coor, float y_coor, float width, float height [, int mode] )
The cpdf_rect() function draws a rectangle with
its lower left corner at point
(x_coor, y_coor).
This width is set to width.
This height is set to height. Returns TRUE on success or FALSE on failure.
The optional parameter mode
determines the unit length. If it is 0 or omitted the default unit as specified
for the page is used. Otherwise the coordinates are measured in postscript
points disregarding the current unit.