Currently, bitmask tuning parameters are entered and displayed as a single number. Not every PI administrator will know that a bitmask involves the addition (or "ORing") of each bit to combine their effects. It is also time-consuming and error-prone to calculate a new bitmask or interpret what an existing one means.
Please consider creating a GUI to edit bitmask tuning parameters. A modal window that contains a check box for each bit would suffice.