Graphic is not a property: separating symbols and property (a sign according to semiotic)

[ahashibon]

In current EMMO a property appears both under (subclass of) symbol and sign. Property under sign makes sense in a semiotic way, i.e., it is related to something that in fact is related to an object (which is related to a physical). "Property " under symbol is an arbitrary graphical (think of a blob of ink or the alphabet on your keyboard). The graphical is not necessary a sign, and hence not a property always.

** solution proposed by @emanueleghedini (please correct if wrong of course). **
remove property under graphical and define instead a "property_representation" or "property_symbol" that stands for a property (sign) in a mathematical model.

property under sign should be one that can be represented by mathematical symbols that stand for property (the property_symbols..)

[jesper-friis]

It has been corrected now.