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.

حركة ‘recession’

Arabic

References: Alm. MS Tunis: 22b.19
Translation of:
Greek: παραχώρησις [Alm. Heiberg: I.5, 18:5; II.6, 103:9; I.8, 28:8; I.12, 65:20]
Synonyms:
تباعد[Alm. MS Tunis: ]
ما عدّ[Alm. MS Leiden: f. 5v]
ميل[Alm. MS Leiden: f. 17r]