high‧light1 W3 [transitive]
to make a problem or subject easy to notice so that people pay attention to it:
Your resume should highlight your skills and achievements.
to mark written words with a special coloured pen, or in a different colour on a computer:
Use the cursor to highlight the name of the document you want to print.
to make some parts of your hair a lighter colour than the rest
—highlighting noun [uncountable]