Input (grade 11): Other branches of BahÃ 'u'll Ã h's family had already been declared Covenant-breakers in' Abdu 'l-Bah Ã's Will and Testament.
Output (grade 12): 'Abdu' l-Bah Ã's will said that only Shoghi Effendi could interpret 'Abdu' l-Bah Ã's or BahÃ 'u'll Ã h's books and letters. This was to prevent different people from splitting the religion up because they thought BahÃ' u'll Ã h or 'Abdu' l-Bah Ã meant different things, the way many other religions have split up.