Definition of an attribute.
  The Attribute object reside in a class volume as a child of an ObjBodyDef object.

  Name for the element the c-struct.

  Compiled system type.

  Compiled offset in body.

  Compiled size, number of bytes.

  Bitmask for attribute properties.

  PWR_MASK_POINTER       Attribute is a pointer.
  PWR_MASK_ARRAY         Attribute is an array.
  PWR_MASK_STATE         Value will not be loaded from develompent database.
  PWR_MASK_CONST         Value is a constant.
  PWR_MASK_RTVIRTUAL     Attribute doesn't exist in runtime environment
  PWR_MASK_DEVBODYREF    Used for input and output attributes, where the
                         connection refers another object which is found
                         in the first attribute of type Objid in DevBody.
  PWR_MASK_OBJIDSELF     Contains the objects own objid. Used in timer attributes.
  PWR_MASK_NOEDIT        Value can't be changed in object editor.
  PWR_MASK_INVISIBLE     Attribute will not be displayed in object editor.
  PWR_MASK_REFDIRECT     If an AttrRef, should not give value pointed to.
  PWR_MASK_NOINVERT      Can't be inverted in plc editor.
  PWR_MASK_NOREMOVE      Can't be removed in plc editor.
  PWR_MASK_RTDBREF       Contains an rtdb reference.
  PWR_MASK_PRIVATE       Only read access in runtime environment. Pointers should
                         not be interpreted by an object editor.
  PWR_MASK_CLASS         Attribute is specified by a class.
  PWR_MASK_SUPERCLASS    Attribute specifies the superclass for a class.
  PWR_MASK_BUFFER        Attribute is a buffer.
  PWR_MASK_NOWBL         Attribute will not be to printed to wb_load file.
  PWR_MASK_ALWAYSWBL     Attribute is always printed to wb_load file.
  PWR_MASK_DISABLEATTR   Attribute can be disabled and a disable attribute is
                         defined..
  PWR_MASK_RTHIDE        Attribute is not viewed in runtime.
  PWR_MASK_NEWATTRIBUTE  Internal flag indicating that this attribute is created
                         in the last session.

  If array, number of elements..

  Index of attribute within a body.

  Reference to the object defining the type.

  LongWord size alignment.