The user may interface to the file system on one of two ways: either through FORTRAN callable routines, or by executing commands at the command line. It is expected that most access to data will be via the callable interface, although the command line interface will be useful for searching through the directory structure.
Although the FATMEN file catalogue makes use of ZEBRA for the management
of the data structures, no knowledge of ZEBRA is required to use
the interface routines, unless the user wishes
to override the system defaults
If the user
needs to override default values, or access fields in the FATMEN
catalogue, the PATCHY sequence FATPARA must be included in his routines.
See page 
for an example of how to extract
the parameter offsets and page for a description of
the parameters and their meanings.
This sequence defines the offsets into the FATMEN banks, e.g.
CHARACTER*8 CHOST
*
* Get name of host on which this file is stored
*
CALL UHTOC(IQ(LFAT+MHSNFA),CHOST,4,8)
*
* Check file sequence number
*
ISEQ = IQ(LFAT+MFSQFA)
*
* That's about as complicated as it gets.
*