Another category of autogenerated files 'types' are the headers files. They are located at tools/autogenerate-config-flagmappings and the filename formats are '*.headers'. These files specify the titles of the available configuration tables.
Table titles take the format "Description of ... configuration options". It is the contents of "..." that you specify in the headers file. For example, "dothill Dot Hill volume driver" in cinders.headers means that the cinder-dothill config table title will be "Description of Dot Hill volume driver configuration options"
Just like the flagmappings files, headers file contents are also in alphabetical order.