I'm working on a Mathematica package that incorporates answers I've read or solicited on this site. For example, @MichaelE2's solution to my question about taking parts of InterpolatingFunctions efficiently. This recycled code makes a very small part of the package, which is otherwise original material.

1. Is this acceptable use?
2. What is the best way to give credit to the authors?

For 2, I'm thinking of giving credit / links in the package code and documentation.