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.

الجرم لا يفسد ‘incorruptible’

Arabic

References: Alm. MS Tunis: I.1:17, f. 2r:20
Translation of:
Greek: ἄφθαρτον [Alm. Heiberg: I.1, 7:14]
Synonyms:
الذي لا يبلى [Alm. MS Leiden: I.1:17, f. 3r:9]