religious institute explicitly stated the contrary. After publication of the 1917 Code, many institutes with simple vows appealed to the Holy See for permission to make solemn vows. The Apostolic Constitution Sponsa Christi of 21 November 1950 made access to that permission easier for nuns (in the strict sense), though not for religious institutes dedicated to apostolic activity. Many of these latter institutes of women then petitioned for the solemn vow of poverty alone. Towards the end of the Second Vatican Council, superiors general of clerical institutes and abbots president of monastic congregations were authorized to permit, for a just cause, their subjects of simple vows who made a reasonable request to renounce their property except for what would be required for their sustenance if they were to depart. These changes resulted in a further blurring of the previously clear distinction between "orders" and "congregations", since institutes that were founded as "congregations" began to have some members who had all three solemn vows or had members that took a solemn vow of poverty and simple vows of chastity and obedience. Further changes in 1983 The current 1983 Code of Canon Law maintains the distinction between solemn and simple vows, but no longer makes any distinction between their juridical effects, including the distinction between "orders" and "congregations". Instead, it uses the single term "religious institute" to designate all such institutes. While solemn vows once meant those taken in what was called a religious order, "today, in order to know when a vow is solemn it will be necessary to refer to the proper law of the institutes of consecrated life." The Annuario Pontificio continues to distinguish between "Ordini" (Orders) and "Congregazioni Religiose Clericali" (Clerical Religious Congregations). Some other authors use the terms "religious order" and "religious institute" as synonyms; canon lawyer Nicholas Cafardi, commenting on the fact that the canonical term is "religious institute", write that "religious order" is a colloquialism. Authority structure A religious order is characterized by an authority structure where a superior general has jurisdiction over the order's dependent communities. An exception is the Order of St Benedict which is not a religious order in this technical sense, because it has a system of "independent houses", meaning that each abbey is autonomous. However, the Constitutions governing the order's global "independent houses" and its distinct "congregations" (of which there are twenty) were approved by the pope. Likewise, according to