The Area property, although not required, is highly recommended. Configuring your tags with areas will enable you to filter your tags by area in the Tag Browser. This will help you to locate tags quickly, especially in larger applications where there are hundreds of tags.
Areas can be used to reduce the amount of memory required to run an application or to stay below licensing restrictions by allowing you to exclude certain tags from being loaded into your application at startup, on the basis of the area configured for their Area property. This is done using the [AREAS] section of the Config.ini configuration file for your application. Information on doing so can be found in the VTS Programmer's Guide: Config.ini [AREAS] Section Variables.
Areas can also be associated with user groups to restrict configuration access to part of an application when users are connecting over the internet from a VTS Internet Client (VIC).