What are all the ways to prompt the user to enter a value?

Hello,

I am aware of two ways to prompt the user to enter data while a script is running:

You can use a single or double ampersand ( & or && )

You can use the word Prompt

I am having an issue where a script that has neither an ampersand nor the word prompt in it, is asking for a value.  So to help with that, and just for my general education, I would like to get a list of all the ways a user can be prompted.

Thanks for your input!

J