Other than displaying the name of the zone, it could be helpful if you use zones for massing studies at the beginning of projects. That said, because they don't show in section and are not as easily to play with as slabs for example, most use the slab tool at this stage.
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"