Here are the requirements that must be met for Reviews implementation in OPAC (both for JS-based and API implementations) both for search results and item details pages:

• The item rating along with a link to open reviews screen must be always displayed under the item cover jacket
• If item does not have a rating, there still always must be a “Write a reviews” link to open Reviews screen for writing reviews
• Whenever Reviews are displayed, there must be an option to add a review
• Reviews screen must open (in order of preference)
  • in line under the book details on part of the page that is visible without scrolling
  • screen overlay
  • pop-up window
• The reviews links and reviews screen must be on the top level of the page, not in sub-sections or sub-pages