Some info on authorisation levels from a colleague

The authorization level field specifies the access mode. The following
authorization levels exist:
. R (.read.) for read access
. M (.matchcode.) for read access using input help (F4)
. W (.write.) for write access
. E and D (.enqueue. and .dequeue.) for write access using the
asymmetrical double verification principle. E allows the user to create
and change locked data records and D allows the user to change lock
indicators.
. S(.symmetrical.) for write access using the Symmetric Double
Verification Principle
. * always includes all other authorization levels simultaneously