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, De planetarum hypothesibus liber (tr. John Bainbridge)

London, Guilielmus Jones, 1620 · 33

Facsimile

trico semper positum in mundi consequentia circa memoratam diametrum excessu, quo Solis motus utrunque aequali tempore et inerrantium et stellae motum excedit, ut in annis Aegyptiacis 95 et nycthemeris primis integris 361, restitutiones 51 proxime conficiat. Desunt enim ad accuratum calculum partis unius sexagesimae 0′ 14′′.