Semiotics is a Transdisciplinary science, that is , it is a meta-science , in Husserlian language,it is transcendental phenomenology, that is , it is formal ontology, General System Theory.
All these terms can replaced with one term which is complex adaptive system thinking , abbreviated as just : System Thinking.
I understand semiotics as a System Thinking in which the primacy is given to relations between the visible and the invisible in vertical or horizontal relation, hierarchy and network.
This make semiotics everything .
It is the condition that make life possible, that make relation possible,that make communication possible,that make thinking and reasoning possible.
Without semiosis there is no life , there is no thinking and action.
Semiotics is science of meaning , relations which integrates the possible with the actual, the invisible with the visible.
Sign is System of relations between signifer and signified