Definition of an intern attribute.
 Intern attributes are used in plc-objects for attributes that should not
 be displayed as an input or output pin in the plc symbol.
 The Intern object reside in a class volume as a child of an ObjBodyDef object.

 Name for the element the c-struct.

 Compiled system type.

 Attribute offset.

 Attribute size.

 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       Should not be interpreted by an object editor.
 PWR_MASK_ISCLASS       Attribute is specified by a class.
 PWR_MASK_SUBCLASS      ...
 PWR_MASK_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.

 If array, number of elements..

 Index of attribute within a body.

 Reference to the object defining the type.

 Name displayed in plc editor.

 Not used for intern attributes.

 The value will be displayed in the plc symbol. The plc symbol
 contains places where individual text can be drawn, annotations.
 The annotations are numbered, and NiNaAnnot is the number of the
 annotation where the value of the attribute will be drawn.

 Special condition for an annotation to be drawn or not.
 In some cases, the condition whether an attribute should be displayed
 in an annotation or not, can be configured from the object editor.
 If NiNaCond is true, the condition will be fetched from an attribute
 named Show'attributename' in devbody.
 For example, the DSup object has an attribute ShowDetectText which
 is the condition for DetectText to be displayed in the plc symbol.

 Special condition for the number of segments to be displayed for an
 objid.
 In some cases, the number of name segments for an objid attribute
 that should be displayed in an annotatation, can be configured from
 the object editor.
 If NiNaSegments is true, the number of segments will be fetched
 from an attribute named 'attributename'Segments in devbody.
 For example, the GetDi object has an attribute SigChanConSegments
 which contains the number of segments of SigChanCon to be displayed
 in the plc symbol.

 Not used.

 Not used for intern attributes.