Book,  Part, Title, Chapter, Can.

 1   1,   0,    1,   0, 16  | certain in themselves, it has retroactive force. If it restricts or
 2   1,   0,    1,   0, 16  |   resolves a doubt, it is not retroactive. ~§3 On the other hand,
 3   4,   1,    7,  10, 1160|       1127 §3[4 ]. Article 2: Retroactive Validation ~
 4   4,   1,    7,  10, 1161|              Can. 1161 §1 The retroactive validation of an invalid
 5   4,   1,    7,  10, 1161|     expressly provided. ~§3 A retroactive validation is not to be
 6   4,   1,    7,  10, 1162|      cannot be rectified by a retroactive validation, whether consent
 7   4,   1,    7,  10, 1162|     was subsequently given, a retroactive validation can be granted
 8   4,   1,    7,  10, 1164|                   Can. 1164 A retroactive validation may validly be
 9   4,   1,    7,  10, 1165|                  Can. 1165 §1 Retroactive validation can be granted
10   4,   1,    7,  10, 1165| marriage, assuming that for a retroactive validation of a mixed marriage