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A line stating which context is earlier.
Also known as: Matrix connector archaeology, Sequence line matrix
The Harris matrix line joining two contexts to state that one lies directly above the other.
States that one archaeological context lies directly above another.
Contexts: Technical drawing, Maps
Records only a direct relationship, so two contexts with no line between them are not stated to be unrelated but merely not in contact.
Contexts: Technical drawing, Maps
A straight line joining two boxes vertically, the upper box being the later context.