A partial list of features and their direction:

 
AXIS_ANGLE_DATUM_PLANE - None.
AXIS_NORMAL_DATUM_PLANE - None.
BALL_GROOVE - X direction.
BALL_SLOT - X and Y direction.
BLEND - None.
BLOCK - X and Y direction.
BOSS - X direction.
CBORE_HOLE - X direction.
CHAMFER - None.
CIRCULAR_ISET - X direction.
CONE - X direction.
CSUNK_HOLE - X direction.
CYLINDER - X direction.
CYL_DATUM_PLANE - None.
CYL_NORMAL_DATUM_PLANE - None.
CYL_PARALLEL_DATUM_PLANE - None.
CYL_POCKET - X direction.
DATUM_AXIS - None.
DATUM_PLANE - None.
DOVE_TAIL_SLOT - X and Y direction.
HOLLOW - None.
INSTANCE - X and Y direction.
LINEAR_ISET - X and Y direction.
META - None.
OFFSET - None.
PRISM - None.
PROJ_DCURVE - None.
RECT_GROOVE - X direction.
RECT_PAD - X and Y direction.
RECT_POCKET - X and Y direction.
RECT_SLOT - X and Y direction.
SIMPLE HOLE - X direction.
SKETCH - None.
SPHERE - None.
SWP104 - X and Y direction.
TANGENT_PARALLEL_DATUM_PLANE - None.
TAPER - X direction.
TORUS - X direction.
TRANSFORM_ISET - None.
T_SLOT - X and Y direction.
UDF
U_GROOVE - X direction.
U_SLOT - X and Y direction.