TTTTKKKK____AAAANNNNCCCCHHHHOOOORRRR____WWWW, TTTTKKKK____AAAANNNNCCCCHHHHOOOORRRR____NNNNWWWW, or TTTTKKKK____AAAANNNNCCCCHHHHOOOORRRR____CCCCEEEENNNNTTTTEEEERRRR. Anchor positions are
typically used for indicating a point on an object that will be used to
position that object, e.g. TTTTKKKK____AAAANNNNCCCCHHHHOOOORRRR____NNNN means position the top center
point of the object at a particular place.
Under normal circumstances the return value is TTTTCCCCLLLL____OOOOKKKK and _i_n_t_e_r_p is
unused. If _s_t_r_i_n_g doesn't contain a valid anchor position or an
abbreviation of one of these names, then an error message is stored in
_i_n_t_e_r_p->_r_e_s_u_l_t, TTTTCCCCLLLL____EEEERRRRRRRROOOORRRR is returned, and *_a_n_c_h_o_r_P_t_r is unmodified.
TTTTkkkk____NNNNaaaammmmeeeeOOOOffffAAAAnnnncccchhhhoooorrrr is the logical inverse of TTTTkkkk____GGGGeeeettttAAAAnnnncccchhhhoooorrrr. Given an anchor
position such as TTTTKKKK____AAAANNNNCCCCHHHHOOOORRRR____NNNN it returns a statically-allocated string
corresponding to _a_n_c_h_o_r. If _a_n_c_h_o_r isn't a legal anchor value, then