STELL returns file position of signal data files HDR = stell(HDR) returns the location of the HDR-signal file position indicator in the specified file. Position is indicated in Blocks from the beginning of the file. If -1 is returned, it indicates that the query was unsuccessful; HDR-struct is a struct obtained by SOPEN. HDR.FILE.POS contains the position of the HDR-Identifier in Blocks See also: SOPEN, SREAD, SWRITE, SCLOSE, SSEEK, SREWIND, STELL, SEOF