Set of regulations extracted in the systematics of normative act shall be accompanied by headings. Headings of systematics unit includes the name of the individual, the ordinal number and the signal inscription, which contains the characteristics of team rules. Name of entity together with its ordinal number identifies the unit and show relationships, in which remains the unit to other systematics units in this normative act. The signal inscription is an expression of metalinguistic and identifies a set of rules included in the systematics unit, based on semantic criteria. The essay proposes a typology of methods for creating signals inscriptions. The signal inscriptions occurring in the Polish legal language allowed the determination of terminology (nomenclature) signal inscriptions and to discuss the terms of ownership, including ownership of logic and language (grammar). Shows the diversity and originality of the vocabulary used in the signal inscriptions compared to the vocabulary of the entire legal language and general language.