-- // This program is free software: you can redistribute it and/or modify
-- // it under the condition that it is for private or home useage and 
-- // this whole comment is reproduced in the source code file.
-- // Commercial utilisation is not authorized without the appropriate
-- // written agreement from amg0 / alexis . mermet @ gmail . com
-- // This program is distributed in the hope that it will be useful,
-- // but WITHOUT ANY WARRANTY; without even the implied warranty of
-- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 

-- AKbooer contribution