Arbortext Editor looks for entities information in the entities subdirectory of Arbortext-path as well as in the entities subdirectory created when the active document type application was installed.

You can use the Arbortext-path\custom\entities subdirectory to store entities. Putting your entity files in the custom\entities subdirectory makes them automatically available, avoiding manual steps to add them to the path. The custom\entities path is automatically prepended to the entities path at startup.