Symbol	Description	Uses
UCASE		6
UPDATE_CG2D	Update 2D conjugate grad. for Free-Surf.	4
UPDATE_CHEMISTRY_EXPORTS	( see pkg/fizhi )	2
UPDATE_EARTH_EXPORTS	( see pkg/fizhi )	2
UPDATE_ETAH	Update Surface height/pressure	2
UPDATE_ETAWS		3
UPDATE_MASKS_ETC		2
UPDATE_OCEAN_EXPORTS	( see pkg/fizhi )	4
UPDATE_R_STAR	Update the level thickness fraction (r* coord).	4
UPDATE_SIGMA	Update the level thickness fraction (sigma-coord).	3
UPDATE_SURF_DR	Update the surface-level thickness fraction.	4