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.