=item columnflag - null or empty (no default), `D' for default, `F' for fixed (unchangeable), `S' for selectable choice, `M' for manual selection from inventory, `A' for automatic selection from inventory, or `H' for selection from a hardware class. For virtual fields, can also be 'X' for excluded.
=item columnflag - null or empty (no default), `D' for default, `F' for fixed (unchangeable), `S' for selectable choice, `M' for manual selection from inventory, `A' for automatic selection from inventory, or `H' for selection from a hardware class. For virtual fields, can also be 'X' for excluded.