The phrase "main highlight" refers to the most important or notable event, moment, or aspect of a particular situation or topic. It is the key thing that stands out or attracts the most attention. Full definition
Main highlight of this beachfront hotel is the rooftop infinity pool with ocean and city views and rooftop restaurants / bar. (islandsofpuertorico.com)
Rather than listing specific details, the job seeker lists responsibilities and achievements under the three main highlighted areas. (resume-resource.com)
So, with this listing, all the specifications and main highlights of the smartphone are now out. (droidholic.com)