In SSRS, how does an “Internal” parameter differ from a “hidden” parameter?

Question

I\'ve been wrestling with this one report for a long time, and finally figured out what to do but it was serendipitous .

Well I changed a parameter that depends on a prev

Answer 1

PromptUser == false --> Parameter is "Internal"

PromptUser == true && Prompt is null or empty --> Parameter is "Hidden"

PromptUser == true && Prompt is NOT null or empty --> Parameter is visible