(TXT) alphabet.ps.txt
 (TXT) cheq.ps.txt
 (TXT) chess.ps.txt
 (TXT) colorcir.ps.txt
 (TXT) escher.ps.txt
 (TXT) golfer.ps.txt
 (TXT) snowflak.ps.txt
 (TXT) tiger.ps.txt
 (TXT) waterfal.ps.txt