PAL

Ptolemaeus Arabus et Latinus

_ (the underscore) is the placeholder for exactly one character.
% (the percent sign) is the placeholder for no, one or more than one character.
%% (two percent signs) is the placeholder for no, one or more than one character, but not for blank space (so that a search ends at word boundaries).

At the beginning and at the end, these placeholders are superfluous.

Ptolemy, Quadripartitum (tr. Philipp Melanchthon)

Basel, Johannes Oporinus, 1553 · 157

Facsimile

vehitur. Unam tamen constituemus viam, qua sive ortum tenuerit locus praecedens sive occasum sive coeli medium sive alium quemcumque his cardinibus interiectum, numerus temporum aequinoctialis, qui praecedentem locum ad sequentem deducat, proportione confici possit. Assumpta enim zodiaci parte, quae in medio coeli est, locoque praecedente et sequente, primum considerabimus, quot horis inaequalibus absit a meridiano locus praecedens, has colligemus si partium quae loco praecedenti et medio coeli supra vel infra terram intercedunt, ascensiones rectas eruemus et has distribuemus in tempora aequinoctialis, quae unam horam inaequalem metiuntur, et constituunt diurnam, si supra terram fuerit locus praecedens, nocturnam, si infra horaria tempora ex arcu loci praecedentis cognoscemus. Deinde quoniam signiferi arcus, qui iisdem inaequalibus horis distant a meridiano, sub uno eodemque continentur praedictorum circulorum, scrutari oportet quot requi