Params path is a path to the file in which you wish to determine a resource type in a designated position on the file's list of resource types.
Action Determines the nth resource type in the file's list of resource types.
If found, the Object Database cell pointed to by addr is filled with the resource's type, a four-character string4. This verb is only implemented in the Mac OS version of Frontier. This is an advanced Frontier verb of primary interest to implementers and advanced scripters. It is not necessary to understand it to use Frontier effectively for most tasks. Combined with rez.countResTypes you can access all the resource types in a file.