Please comment : New tutorial about DataGrid and DataObject

Hi, I've just finished writing a first version of my "Structures_DataGrid and DB_DataObject tutorial", and would greatly appreciate that you review it : http://www.samalyse.com/code/pear/dgdo By "you", I mean "PEAR developers". This tutorial is focused at users and even newbies, but I consider that your point of view is important so that my tutorial doesn't induce such users/newbies into using bad practices. My mother-tongue is not english, so if you find mistakes or typos, I'll be happy to hear about them. Thanks -- og - http://www.samalyse.com