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.

الفاعل ‘active’

Arabic. – Grammar: adj.

References: Alm. MS Leiden: I.1:17, f.3r:9
Translation of:
Greek: ποιητικόν [Alm. Heiberg: I.1, 7:16]
Translated into:
Latin: agens  [Alm. Gerard: I.1:17, f. 1vb:45]
Synonyms:
فاعل[Alm. MS Tunis: I.1:17, f.2r:22]