Robin Catalogue: A. MS., n.p., [c.1903?], pp. 1-2, incomplete.
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If a sign allows a latitude of choice to the interpreter, within certain limits and in certain respects, as to what its object or meaning shall be regarded as being, it may be called general, or non-individual.
If a sign allows no latitude, either to utterer or to interpreter, as t what object or meaning it shall be regarded as representing, it may be called a singular sign.
If a sign allows a latitude of choice to the utterer in certain respects and within certain limits, as to what its object or meaning shall be, it may be called vague, or non-determinate.