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.

in a fixed position‘in a fixed position’

English

References: PH Hamm: I.3:3, 46:21; I.11:4, 56:6; I.11:7, 56:22; I.12:7, 59:5-6; I.13:2, 60:9; I.13:7, 61:13-14
Translation of:
Arabic: ἀμεταστάτος [PH Heiberg: I.3:3, 74:13; I.9:2, 82:8-9; I.10:2, 84:29; I.11:4, 90:22; I.11:7, 92:13; I.12:3, 94:21; I.12:7, 96:15; I.13:2, 98:13; I.13:7, 100:17; I.14:3, 102:23]
Synonyms:
with a fixed position[PH Hamm: I.9:2, 51:10]