The framesets function fills the descriptionArr array with frameset descriptions and the locationArr array with the paths and file names of framesets declared in the document type configuration file (.dcf) for the document type associated with doc. If doc is omitted or 0, the current document is used.

The arrays are returned in the order in which the framesets are declared in the .dcf file. The function also returns the number of entries in each array. The first entry is stored at index 1.