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.

ἀεὶ ἀφανής ‘always invisible’

Greek

References: Alm. Heiberg: II.6, 103:4; II.6, 104:8; II.6, 117:6
Translated into:
Arabic: الدائم الخفاء [Alm. MS Tunis: 22b.16-17]
Arabic: غائب أبدا [Alm. MS Leiden: f. 17r]
Arabic: أبديّة الخفاء [Alm. MS Tunis: ]
Arabic: دائم الخفاء [Alm. MS Tunis: 23a.1]
Arabic: الأبديّة الخفاء [Alm. MS Leiden: f. 17r]
Modern translations:
English: always invisible [Alm. Toomer: 83; 84]
Synonyms:
αἰεὶ ἀφανής[Alm. Heiberg: I.4, 16:6-7]