CAS command question

[parisse]

DrD, again it's not about left and right, it's about evaluation of inequation operators. Modifying that would be a long and bugprone task (there are 200 000 lines of source code in the CAS to review...). It's much easier to ask the few people who are programming with symbolic expressions to adapt to the way evaluation is done (and as pointed before it does not make the programmer task harder because there are less inequations operators to handle).
As Han said, a normal user will use the apps and built-in commands of the Prime (Home or CAS), only a tiny percentage of them will write programs. Nowadays, it's much easier to program on a desktop than on a calc, even for people who like to do programing.