Secn, Secn2 contain hollerith info. In addition to all of the above, there are some 'special' primaries for sampled variables. These are completely defined by their primary name. This sampled variable requires a secondary name that may be up to eight characters long, and coded as holleriths in Secn, Secn2. TORO, Micro, Unit.
Unit is true integer.
There is a step variable which is defined by the Primary KNOB, which indicates that stepping is going to be done with a Multi-device knob file. Different data types can be accessed by equivalence. A future problem may be that one large device type requires much more space than any other, resulting in inefficient use of storage. An application could maintain efficient storage by a trade-off.