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.

uniform ‘uniform’

English

References: PH Hamm: I.1:2, 44:7; I.1:5, 45:11
Translation of:
Greek: ὁμαλός [PH Heiberg: I.1:2, 70:7; I.1:5, 72:1. – Plan. Hyp.: II.12]