1. have a layer for items that you don't want to print and don't include this layers as visible in your print layer combinations.
2. Grids and Backgrounds, but why would you want to do this? If you are opening a DWG there is the option to show it with its background.
Erika
Architect, Consultant
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
AC5-18
Onuma System
"Implementing Successful Building Information Modeling"