Hi, I wanted to share with those you could be interested a project I did to learn a little about Spec in Pharo 3. It's a simple and very basic calculator. There code is all commented and I even include a little tutorial on how I build the UI. There are a number of issues however that I have to figure out being the most important a way to get the text displayed to be right-aligned. Also error handling and other...my point was just to focus on Spec. If you are interested you can get it here: MCHttpRepository location: 'http://ss3.gemstone.com/ss/Specalc' user: '' password: '' and then Calculator new openWithSpec. best regards Nacho ----- Nacho Smalltalker apprentice. Buenos Aires, Argentina. -- View this message in context: http://forum.world.st/A-simple-an-basic-calculator-built-with-Spec-tp4719923... Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.