SECTION./FCAT
SORT/FCAT [cat_name] 
	sort a fit file catalog
SECTION./ICAT
SORT/ICAT [cat_name] 
	sort an image catalog
SECTION./TABL
SORT/TABLE table keys
	sort table according to (ascending) values 
SECTION./TCAT
SORT/TCAT [cat_name] 
	sort a table catalog
