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.

revolvo ‘revolve’

Latin. – Grammar: v..

References: Alm. Gerard: I.3:32, f. 2rb:22
Translation of:
Arabic: دار [Alm. MS Leiden: I.3:32, f. 3v:8. – Alm. MS Tunis: I.3:32, f. 2v:25]