programs disappearing from toolbox menu

[DrD]

The Prime's CAS programs are stored as variables and have been defined that way by the authors. Understanding how CAS programs are defined, allows their proper use. Take any command from the command set, and apply the same philosophy, understanding its functionality allows its proper use.

The hp Prime doesn't hold itself out to be any particular programming language equivalent, so there is no compelling reason to place any external restrictions on its design. Validating "expectations" is part of the learning curve.

I'm OK with this design.