Highlighting of Pdf manual

Travel Forums Travel Photography Highlighting of Pdf manual

1. Posted by Monsoon (Budding Member 18 posts) 6y Star this if you like it!

I just bought a Lumix DMC-ZS50. I downloaded the operating manual in Pdf form. Now I want to highlight certain sections but the Highlighter icon is inactive. What can I do to activate it.
Thanks for any help.