The :READ command can be used to request user input. Together, the optional input check and input handling parameters can be used to:
Here are some examples.
Does anyone know of other combinations? Specifically, are there ways to do any of these things?
This question originates in the discussion Generate input dialog box dynamically from prompt set object.
I identified two undocumented input handling flags:
So far, I have not been able to determine their function. Perhaps they are remnants of deprecated functions, preserved to maintain compatibility.