Reference map labeling over Basemap

Discussion created by gutgut on May 29, 2013
Latest reply on Jun 11, 2013 by gutgut
While the ability to send a question to Ask A Cartographer is disabled i'll place my question regarding label constraints here.
I have investigated Light Gray Base Map mxd template from and found that for the reason to not overlap labels which are in Basemap with separate Reference Map lables is used Label Constraints (red square point symbols).
Could someone provide in detail how it is done or what is technique for 'invisible' (red squares) label constraint point symbols in Basemap?