(You can safely ignore this post if you are a student. This post only concerns staff who create and maintain online reading lists.)
The digitisation request form for online reading lists changed slightly yesterday. In the previous version, the options for Book Chapter, Book Section and Article appeared in tabs across the top of the screen. The options will now appear in a drop-down menu, making it clearer what resource type you are digitising from and giving you the option to select a page range that is not a complete chapter. Talis have produced this article explaining the change with screenshots.