NOTAMs are filtered for red and amber "hotwords", e.g. AD/RWY * CLSD/PPR/NOT AVBL or ILS/VOR * OUT OF SERVICE
Also the NOTAM validity is considered - if validity ended more than 24hrs ago or validity starts in more than 24hrs, this NOTAM will be filtered out.
Currently the highlighting function is hard coded, however this list can be extended - just get in touch.
At the end of NOTAM list the "clear filters" button allows switching to complete NOTAM list.