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.

Isaac Argyros, 〈Paraphrasis in Anonymum commentum in Quadripartitum〉

Madrid, UC-BH, cod. 122 · 2v

Facsimile

ntur ad eaque penetret ac prima omnino permutet elementa, que sub Luna sunt; hoc est ignem et aerem que ab motibus ethereis motibus continentur et convertunturalterantur reliqua autem omnia. Hoc est terram et aquam, plantasque et animantia, que in eis sunt continent, et convertuntcommuntant; omnibus quidem est paucis etiam rationibus adductis manifestum.