L0 = <http://www.simantics.org/Layer0-1.1>

L0.Abstract
    @L0.defTag 
    L0.HasDescription "Instances of a type tagged as Abstract cannot be directly instantiated." 
    //L0.HasDomain L0.Type
L0.Deprecated
    @L0.defTag        
L0.Enumeration
    @L0.defTag
    L0.HasDescription "Instances of a type tagged Enumeration cannot be instantiated outside of the ontology that defines it." 
    L0.HasDomain L0.Type
L0.Final
    @L0.defTag
L0.SharedRange
    @L0.defTag
    L0.HasDescription "Used in export to determine optional fragments."
L0.Immutable
    @L0.defTag
    L0.HasDescription "Indicates that a relation can only be modified when subject is created or destroyed."