SPRUHZ7K August 2015 – April 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
A control descriptor is the mechanism that is used in a list to give commands to the List Manager. These descriptors are not considered consumed until the List Manager has done the instruction required by the descriptor. All control descriptors have a common Header located at Word 3 but the remaining words are based on the specific control descriptor.