The numbers used to uniquely identify each text (LangScape numbers, LNos) consist of three figures on the pattern Ln.n.n. These numbers hold the following information:

1. The first number equates to the eSawyer number (or in a handful of cases to a Pelteret number - D.A.E. Pelteret, Catalogue of English Post-Conquest Vernacular Documents, Woodbridge, 1990)

ExamplesL156.n.n comes from charter eSawyer number 156 (S156)
L(P11).n.n comes from charter Pelteret number 11

2. The second number indicates whether it is the only boundary in the charter (number=0), or if not, whereabouts in the charter it comes (starting with number=1).

ExamplesL156.0.n is the only boundary survey in S156
L35.1.n is the first of two or more boundary surveys in S35
L35.2.n is the second boundary in S35

3. The third number indicates whether it is a LangScape ‘Top Text’ (number=00) or a ‘Variant Version’ (starting with number=01 and largely taking the numerical sequence from the order of the manuscripts cited in eSawyer)

ExamplesL156.0.00 is the top text of the only boundary in S156
L35.1.00 is the top text of the first boundary in S35
L35.2.01 is a variant version of the second boundary in S35
L35.2.02 is a further variant