particular jurisdiction. The decrees of the Roman congregations (q. v.) are certainly binding in each case submitted for judgment. But there are varying opinions as to whether such judgment is to be taken as a rule or general law applying to all similar cases. The common opinion is that when the decisions are enlargements of the law (declaratio extensiva legis) the decisions do not bind except in the particular case for which the decree is made. If, however, the decision is not an enlargement, but merely an explanation of the law (declaratio comprehensiva legis), such decree binds in similar cases. Benedict XV's restriction of curial decrees On 15 September 1917, by the motu proprio Cum Iuris Canonici, Pope Benedict XV made provision for a pontifical commission charged with interpreting the code and making any necessary modifications as later legislation was issued. New laws would be appended to existing canons in new paragraphs or inserted between canons, repeating the number of the previous canon and adding bis, ter, etc. (e.g. "canon 1567bis" in the style of the civil law) so as not to subvert the ordering of the code, or the existing text of a canon would be completely supplanted. The numbering of the canons was not to be altered. The Roman congregations were forbidden to issue new general decrees, unless it was necessary, and then only after consulting the pontifical commission charged with amending the code. The congregations were instead to issue instructions on the canons of the code, and to make it clear that they were elucidating particular canons of the code. This was done so as not to make the code obsolete soon after it was promulgated. The 1917 Code was very rarely amended, and then only slightly. Particular law The decrees of a national council may not be promulgated until they have received the approval of the pope. The decrees of a provincial synod have no force until they have been approved by Rome. This approval is twofold: ordinary (in formâ communi), and specific (in formâ specificâ). The former means that there is nothing which needs correction in the decrees of the synod, and they thereby have force in the province. This is the approval generally given to such decrees. If approval is given in formâ specificâ the decrees have the same force as if they emanated from the Apostolic See, though they are binding only in