What feature in GitLab allows for inline editing on branches?

The feature that allows for inline editing on branches in GitLab is the ability to edit files directly. When you navigate to a file in a repository and use the "Edit" option, you can make changes to that file and then commit those changes directly to the branch you are currently viewing. This functionality makes it easy to modify small parts of code or documentation without requiring the use of a local Git environment. It also streamlines the workflow by enabling quick edits and immediate commits, which can help in maintaining clear and effective documentation of development processes.

The other options focus on different aspects of using GitLab. Commit Changes pertains to the action of saving updates to the repository but does not specifically refer to the inline editing feature. Merge Requests are used for reviewing and merging changes from one branch to another, facilitating collaboration but not allowing direct edits. Review Changes focuses on assessing changes made during development, which is essential in the development workflow but does not involve the act of editing files directly within branches.