RLS — Figure 5 - Identity information

-In RoLo Symbolic Position class, attributes(direct,indirect) should replace to derived attributes.

-The navigability notation(arrow head) should be added as follows:
-SymbolicCRS class side of association between DirectSymbol and SymbolicCRS.
-DirectSymbol class side of association between DirectSymbol and RoLo Symbolic Position.
-RoLo Symbol Ref class side of association between DirectSymbol and RoLo Symbolic Ref.
-DirectSymbol class side of association between DirectSymbol and RoLo Symbolic Ref.
-DirectSymbol class side of association between DirectSymbol and RoLo Symbolic Position.
-RoLo Symbol Ref class side of association between RoLo Symbol Ref and RoLo Symbolic Position.

-The association end name should be added as follows:
-direct : DirectSymbol class side of association between DirectSymbol and RoLo Symbolic Position.
-indirect : RoLo Symbol Ref class side of association between RoLo Symbol Ref and
RoLo Symbolic Position.

-Because the following association is meanings to limit relations defined in superior,
we should add an explanatory note.
NumericIdentityCS - NumericIdentityCRS
SymbolicCS - SymbolicCRS
IdentityCRS - IdentityDatum

Fix Figure 5 according to the suggestions. However, the associations RoLo
Symbolic Position – DirectSymbol and RoLo Symbolic Position – RoLo Symbol
Ref shall be compositions both on RoLo Symbolic Position side. For the
associations SymbolicCRS – DirectSymbol and DirectSymbol – RoLo Symbolic
Ref, it is better to make them aggregations that indicate relevant attributes.