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.

رجع ‘turn back’

Arabic. – Grammar: v.

References: Alm. MS Leiden: I.3:34, f. 3v:15. – Alm. MS Tunis: I.3:34, f. 3r:5
Translation of:
Greek: ἀνακάμπτω [Alm. Heiberg: I.3, 11:18, 19]
Translated into:
Latin: redeo  [Alm. Gerard: I.3:34, f. 2rb:42]