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.

ἀπαράλλακτος ‘precisely similar, indistinguishable’

Greek. – Grammar: adj.

References: Alm. Heiberg: I.10, 43:5
Translated into:
Arabic: ما ليس (بينه وبين المقادير المحصلة) اختلاف [Alm. MS Tunis: ]
Arabic: لا يغادر (من الحقيقة) ما حسّ [Alm. MS Leiden: f. 7v]
Modern translations:
English: precisely similar, indistinguishable