Function:     fts_skippix

Purpose:      Skip pixels in a FITS file.

Category:     FITS

File:	      fts_io.c

Author:       Peter Roelfsema

Use:	      FTS_SKIPPIX ( MTID,	input		INTEGER,
			    NSKIP )	input/output	INTEGER.

	      FTS_SKIPPIX Returns:
			  >0 - number of pixels skipped on MTID.
		   -1 .. -10 - tape error (see MTIODEV.DC2)
			 -13 - end of tape found
			 -31 - Only forward skipping allowed.
	      MTID	A device unit number as obtained from MTOPEN.
	      NSKIP	Number of pixels to skip.

Description:

	  FTS_SKIPPIX Skips nskip pixels in FITS files. This function is very
       usefull when only known small sections from FITS files have to be read.


Updates:
	Oct 29, 1990: PRR, Original document.