In mapping, a survey map symbol (often an elongated 'S' shape, hook, or curly brace) that connects two or more adjacent land parcels, indicating they are under common ownership, part of the same tax parcel, or were previously part of a larger, single tract. Used as an alternative to shading or colour to denote that a line given by the base mapping is not a land ownership boundary. The absence of one is therefore an indication that a line shown may be intended to denote a land ownership boundary