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Program: RHEAD

Purpose: list header elements ( descriptors ) and their level in grids

Category: HEADER, FITS, UTILITY

File: rhead.shl

Author: W. Zwitser

Keywords:

SET= name of set

KEY= key[/..], -key[/..], S(izes), A(ll), R(=A-S)

key/key/.. keywords of descriptors to be printed.
These keywords are seperated by a slash.

-key/key/.. keywords of descriptors which should NOT be
printed. All other descriptors are printed.
These keywords are seperated by a slash.

S print descriptors which have to do with the
axis size, i.e. NAXIS[n], CRPIXn, CTYPEn.

A print all descriptors.

R print relevant descriptors, i.e. all except the
S descriptors.

Default: program exit.
ALL= all levels ?
N the descriptor levels are asked for by the next keywords
CLOW= and CUPP=.
Y print descriptors at all levels ( default ).

CLOW= lower grid coordinates.
This is the lower left corner of the plane where descriptors
are searched. Give a grid value for each axis and an 'u' for
axes with an undefined value.
Default: top level ( = all axes undefined ).

CUPP= upper grid coordinates.
This is the upper right corner of the plane where descriptors
are searched. Give a grid value for each axis and an 'u' for
axes with an undefined value.
Default: CLOW.

DEV= output device.
F write descriptors found in an output file RHEAD.PRT.
S terminal screen ( default ).

This keyword is prompted if more than 15 descriptors were
found, otherwise the screen is taken.

Updates: May 1, 1990: WZ, installed.
Dec 1, 1992: VOG, Category added.