1 dcl       1 statement                   based(p),           /* statement node description */
 2           2 node_type                   fixed bin(15),
 3           2 stmnt_type                  fixed bin(15),
 4           2 reference_count             fixed bin(15),
 5           2 source_id                   fixed bin(31),
 6           2 sub_stmnt_id                fixed bin(15),
 7           2 prefix                      bit(12),
 8           2 optimized                   bit(1),
 9           2 back                        ptr,
10           2 next                        ptr,
11           2 next_of_kind                ptr,
12           2 root                        ptr,
13           2 labels                      ptr,
14           2 reference_list              ptr;