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.

count off ‘count off’

English

References: Alm. Toomer: 104, n.84; 104, n.84
Translation of:
Greek: διεκβάλλω [Alm. Heiberg: II.9, 144:1]
Greek: ἐκβάλλω [Alm. Heiberg: II.9, 144:10]