@pimms.param<EOL><INDENT>def center_right(cr):<DEDENT>
if cr is None: return None<EOL>if not pimms.is_vector(cr) or len(cr) != <NUM_LIT:3>:<EOL><INDENT>raise ValueError('<STR_LIT>')<EOL><DEDENT>return pimms.imm_array(cr)<EOL>
proj.center_right is the (x,y,z) coordinate of any point that should appear on the positive
x-axis of the resulting map projection.