Summary Details
Whenever you select one of the content items in the section page content area, the content item's summary fields are displayed in the summary details area on the right of the editor window, where you can edit them. The particular fields that make up a summary vary from publication to publication.
Any changes you make to the summary fields here only affect this section. The same article can appear with different summary headlines in different sections.
In order to save any changes you make you must click on either the Save or the Save & close button at the bottom of the editor window.