Hell, it prevents interop between different versions of Revit. Automatic "upgrade" if you touch a file, and there's no way to save back to previous formats.
But since you can't even buy a copy of Revit anymore (subscription licensing only), I guess that no longer matters.
Anyway, I was referring to the 2-letter command system. I think Revit is the only piece of software I've ever encountered it in.
In so far as I recall, and I never used Generic Cadd in anger, pretty much everything in Generic Cadd was two letter mnemonics. This was back in the days before AutoCad had .pgp files for command aliasing and was just adding drop down menus. The only good options for driving AutoCad with a keyboard were either with the screen menu system that lived in a sidebar like area of the display, or writing AutoLisp and using the bang operator on expressions.
Once AutoCad got .pgp files in R11, then two letter commands were possible...I used "dd" for 'ddlmodes when it was different than 'layer for many years.
Anyway, Generic Cadd was one of the top PC Cadd systems when Autodesk bought them out and then slowly killed them off. I'm not big on the Revit, I upgraded from R14 to Architectural Desktop version 1. Revit's business model always worried me.
Yeah, now that you mention it, AutoCAD does do a fair bit of two letter aliasing. Not quite as directly as Revit's where you just hit the letters and don't need to press Enter.
I'm not a huge fan of Revit either. Thankfully one of my coworkers handles most of what we have to do here (families of our products for architects/designers to use in their projects), though I've still gotten dragged into more than a few discussions about it. Like whether we build our assets in an older version that more people can import but has known bugs in the photometrics display, or if we go to the new one and then have people coming and asking "Hey do you have these for 2011?" and having to remake it from scratch. Ugh.
But since you can't even buy a copy of Revit anymore (subscription licensing only), I guess that no longer matters.
Anyway, I was referring to the 2-letter command system. I think Revit is the only piece of software I've ever encountered it in.