A few Prime programming questions

[Dave Britten]

Okay, good to know expr can be used in that fashion. Though with the string manipulation and on-the-fly compilation, I'm guessing it's best to avoid using that in performance-critical loops.

Custom help text would be really nice. It wouldn't have to be anything especially complicated; you could borrow the use of /// from XML documentation systems (e.g. .NET).

///Some help text.
///More text.
///param_name: Parameter description
EXPORT MyFunction(param_name)...

Then you could even scrape the parameter descriptions for display when running the program via the Program Library menu, much like specifying help text for fields with the Input function.