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.

προσθέτω‘add’

Greek. – Grammar: v.

References: Alm. Heiberg: II.9, 144:25
Translated into:
Arabic: زاد (زد) [Alm. MS Tunis: 31b.1]
Arabic: زاد [Alm. MS Leiden: f. 24v.35]
Modern translations:
English: add [Alm. Toomer: 104]