A 'conventional' that stand for a 'physical'.
Theory
[2,"smw-datavalue-wikipage-property-invalid-title","HasComment","The 'theory' is e.g. a proposition, a book or a paper whose sub-symbols suggest in the mind of the interpreter an interpretant structure that can represent a 'physical'.\n\nIt is not an 'icon' (like a math equation), because it has no common resemblance or logical structure with the 'physical'.\n\nIn Peirce semiotics: legisign-symbol-argument@en"]