region defines which MLS regions to be used for this shortcode output.
When only one MLS region is specified
a: The output will initialize with data from that specified region
b: If a search panel is part of that output, the search panel will be limited to displaying listings for just that region.
Specify multiple MLS regions for this shortcode output
a: The output will initialize with data from all regions specified
b: If a search panel is part of that output, the search panel will search listings across all specified regions.
NOTE: This parameter is only applicable to Rover IDX setups that have multiple MLS regions enabled in Rover IDX >>> General.
NOTE: Displaying multiple regions data on one page is not allowed by some MLS's. It is up to you to understand the local MLS rules, and use this parameter in accordance with local MLS rules and regulations.