These are the start locations that Corrade will attempt to start at when connecting to the grid. Region name can also be set to "last" or "home" in order to make Corrade login to the last location it connected to, respectively the home location. The order of the rows can be adjusted such that Corrade will attempt to connect to each location starting from the top and up to the last location at the bottom. In case all locations to connect to have been exhausted and Corrade cannot connect to the grid, then Corrade will terminate.
Even though Corrade commands are much more powerful than RLV, Corrade has built-in support for RLV that can be enabled here.
As per the RLV specification, certain RLV behaviours can be blacklisted and by ticking the behaviour names, the behaviours will be added to the RLV blacklist.