The ITERATE library is build in version 1.2.20405, therefore there is no need to load the library with QUICKLISP anymore.

 

About ITERATE library:

https://common-lisp.net/project/iterate/

 

I can't find iterate in Opusmodus-V3. Where did the library go?

It is not part of v.3.0. You need Quicklisp to load the library.