Excellent to find this topic here, I stopped a bit of using Autocad for my vision, previously all the monitors were like the first color TVs, I'm talking about using Autocad from version 9 or 7, I do not remember well, I know it was As in 1993, I think it was called VersaCad, because it was so versatile. Well I do not use it so much now unless they ask me for specific jobs, what I see is because I'm daltonic (it has its scientific name: Deuteronopia), and that's why the colors I see are much brighter and my eyes get very dry, when come the LCD and LED monitors, I saw the glory and I could continue working with Autocad. I really wanted to say something about the abbreviated and personalized commands, of course all you mentioned are the most used, but you can create your own abbreviated commands and / or even change the abbreviation, for example, for my cutting it was better and faster to place only the letter "C" as abbreviated command, these latest versions of Autocad simplified those customization functions, that is found in the sub-files called AutoLisp. look over that, it is very useful and speed up the work ... bye