# 2.18.0 ## Maintenance Release | Version | 2.18.0 | | ------------ | ---------- | | Release Date | 2016-09-22 | ## Key Features This release was primarily focused on resolving issues that impacted a number of users. ## Details Changes are as follows: #### **Instructor Uploads - Table of Contents** Materials uploaded from Instructors will now have a table of contents displayed. This functionality was impacted in a previous release but has been corrected. This change is retroactive: any materials that were uploaded previously will now show their ToC. #### **Instructor Uploads - Missing placeholders** When an instructor uploads material, a placeholder is included to show that the material is being rendered for display in Engage. That placeholder was not showing due to a recent release and the issue has been corrected. #### **Data Storage and Loading Optimization** The method used to store data in a user's browser has been modified to significantly reduce the size of the data stored. API calls for instructors have been optimized to decrease loading time. #### **Gravatars - Always load over HTTPS** An issue with loading Gravatars over HTTP caused some browsers to display a broken link image. Gravatars are now loaded over HTTPS and will display properly in all browsers. ## Known Issues None. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://resources.unizin.org/products/content/unizin-engage/release-notes/2016-09-22-engage-2.18.0-maintenance-release.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.