Data Structures

Here are the data structures with brief descriptions:

celprm	Celestial transformation parameters
fitskey	Keyword/value information
fitskeyid	Keyword indexing
linprm	Linear transformation parameters
prjprm	Projection parameters
pscard	Store for PSi_ma keyrecords
pvcard	Store for PVi_ma keyrecords
spcprm	Spectral transformation parameters
spxprm	Spectral variables and their derivatives
tabprm	Tabular transformation parameters
wcserr	Error message handling
wcsprm	Coordinate transformation parameters
wtbarr	Extraction of coordinate lookup tables from BINTABLE