Bluebeam’s Help for the Dimmer feature is very good, (see image below) however it’s missing one thing. A warning: if you leave the Dimmer ON and go to print the document, the document content may not print. You may end up with just the markups printing. This could drive your team crazy so as a best practice, place a text box markup stating Before you Print, Turn the Dimmer OFF for content to also print, especially if you are sharing this document with other who may never have used the Dimmer feature.