Explaining the four tiers of AutoCAD license

Yesterday’s tiers Once upon a time, long long ago, you could buy AutoCAD with or without sets of features  called Advanced Drafting Extensions (ADE) containing optional extras such as dimensioning. At one stage you could buy four tiers of AutoCAD license at different prices: AutoCAD AutoCAD + ADE1 AutoCAD + ADE2 (incorporating ADE1) AutoCAD + ADE3 (incorporating ADE1 and ADE2) (Interestingly, the above situation is similar to the current arrangement with BricsCAD, where BricsCAD Classic, Pro and Platinum are available with incrementing prices and feature sets, with BricsCAD BIM and Sheet Metal available on top of Platinum). As almost everybody bought …