http://nwcom.info/Soft/Applications/grafis%2011/grafis/0070/Basis_d/MAS/Masquell.chm
http://nwcom.info/Soft/Applications/grafis%2011/grafis/0070/Basis_d/MAS/MASQUELL.Urt
http://nwcom.info/Soft/Applications/grafis%2011/grafis/0070/Basis_d/MAS/Masquell2.pdf