Subtitle
The subtitle is comprised of any spillover text that is slightly less important than
the title but still somewhat necessary to fully understand the map. This is a better
place to put the geographic location of the map and the sponsoring or authoring
information than in the title. But again, if possible, leave that type of information
for metadata text blocks in less conspicuous locations of the layout rather than the
subtitle. Ideally, the subtitle provides further detail that the viewer needs to know
prior to being able to understand the map element(s).