Some modules add a feature to the detail page of other modules' items. For example, Comments, Likes, Tags and Share To Timeline show at the bottom of a blog post or an audio file. These are item detail features.
Open ACP > Modules > Core > System Core > Tools > Item Detail Features. The table lists every item detail feature installed on your site, with the module that adds it.
Click the up arrow in the Order column to move a feature up. Item detail pages show the features in this order, for every module.