Feature request: include interactive-only clause in command docs

[Zoybean]

When viewing the helpful buffer for a function declared as interactive-only, the displayed documentation should include the snippet saying "this function is for interactive use only; in Lisp code use foo' instead." (or similar) which is presented in the corresponding describe` buffer.

i don't have a strong opinion of where this clause should go, whether it gets its own section or is added to the Documentation section.

Workarounds:

the helpful buffer already shows symbol properties in its own section, so the information is available, but not promiment.

Note:

I don't know if there are other symbol properties that usually add to the documentation that are not yet implemented in helpful. There may be some opportunity for code reuse if so.