Here are the data structures with brief descriptions:

attribute_line_array
attribute_point_array
CHARVECTOR
db
DOUBLE_GRID
DOUBLEMATRIX
DOUBLERASTER_MAP
DOUBLESQUARE_GRID
DOUBLETENSOR
DOUBLEVECTOR
FLAG
FLOATBIN
FLOATMATRIX
FLOATVECTOR
GRID
HEADER
ijx
INTBIN
INTMATRIX
INTVECTOR
ix
KEYWORDS
KEYWORDS_LIST
LINE
LINEVECTOR
LONGBIN
LONGMATRIX
LONGMATRIX_VECTOR
longpair
longpoker
LONGVECTOR
measure
OUTPUT_FILENAMES
PARAM
phrase
POINT
POLYGON
polygon_connection_attribute_array
polygon_connection_attributes
POLYGONVECTOR
RASTER_MAP
realpair
S_TIMES
SHORTBIN
SHORTMATRIX
SHORTVECTOR
SQUARE_GRID
st
T_INIT
t_keywords
xyz