22.9.5 Other Data Types
  CDD/Repository supports the following additional data types:

        BIT
        DATE
        POINTER
        UNSPECIFIED
        VIRTUAL
        ALPHABETIC

  BASIC does not support these data types. BASIC trans-
  lates these data types by signaling the informational message
  ``Datatype in CDD/Repository not supported, substituted group
  for: <field name>'', and creates a group to contain the field.
  See Table 22-2 for a description of how BASIC translates
  these data types.

  If you extract a CDD/Repository definition that contains
  a BIT field, the field must be a multiple of 8 bits (1 byte).
  This means that the following field must be aligned on a
  byte boundary. If the following field is not aligned on a byte
  boundary, BASIC signals the error ``Field <name> from
  CDD/Repository has bit offset or length''.