Change Displayers
Reference
A displayer is the layout a list of changes is rendered with. The custom report form offers the four below in a drop-down, and the displayChanges macro takes the same names in its displayer parameter. A release note uses simple for the changes that carry a screenshot and list for the others.
Grid
Cards laid out in columns, each showing the change screenshots above its title and summary. This is the default.

Flow
One row per change, with the screenshots on the left and the title and summary on the right.

Simple
One section per change, with the screenshots in a gallery and a link to the change page when it has a description.

List
A bullet list of titles and summaries, with no screenshots. This is the compact form used for the miscellaneous changes.

FAQ
Can I add a displayer of my own?
Yes, by creating one page; see Create a Change Displayer.