GTFOPEN is an auxilary function to SOPEN for reading
SYNOPSIS
function [HDR]=gtfopen(HDR,PERMISSION,arg3,arg4,arg5,arg6)
DESCRIPTION
GTFOPEN is an auxilary function to SOPEN for reading
files in the Galileo Transfer format (GTF)
HDR = gtfopen(HDR,PERMISSION);
see also: SOPEN, SREAD, SSEEK, STELL, SCLOSE, SWRITE, SEOF