Postscript Example
•%!         %% Draws a one square inch box and inch in from the bottom left
/inch {72 mul} def      % Convert inches->points (1/72inch)        
newpath % Start a new path        
2 inch 2 inch moveto    % 2 inches in from the lower left        
3 inch 2 inch lineto    % bottom side        
3 inch 3 inch lineto    % right side      
closepath               % Automatically close path
fill                    % Fill the defined shape        
showpage                % We're done... eject the page
http://www.rddvs.com/postscript.html
Real ps docs (a la Illustrator—many many pages header and other info and settings and hex stuff. One line—got 153 page Word doc.