I want to know the answer to the following question:
How many code positions were left unassigned for furture standardization?
All the background I'm provided with is that "With the other special characters and control codes filled in, ASCII was published as ASA X3.4-1963, leaving 28 code positions without any assigned meaning, reserved for future standardization, and one unassigned control code.:66, 245". Is that enough to answer the question?