Hi, I've learnt metacello with help of ProfStef, successfully write/upload my ConfigurationOf package to my squeaksource repository. That package also successfully installed packages as I described. Before looking at ProfStef on metacello, I couldn't understand why it has to be so complex by reading classes begins with 'ConfigurationOf'. HelpSystem of metacello was confusing, API references was too referece showing no direction. ProfStef showed me simplest form of metacello, which i could understand at glance. It gradually took me to more complex form of metacello. I want to try more ProfStefs if there is than OneClick image? Best Regards HwaJong Oh -- View this message in context: http://forum.world.st/Learned-metacello-with-ProfStef-tp3576684p3576684.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.