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.

كوكب المريخ‘Mars’

Arabic

References: PH Morelon: I.7:3, 25:5
Translation of:
Greek: ὁ τοῦ Ἄρεως ἀστήρ [PH Heiberg: I.7:3, 78:24]
Modern translations:
French: l'astre Mars [PH Morelon: I.7:3, 24:5]
German: das Gestirn Mars [PH Nix: I.7:3, 79:24]
Synonyms:
كوكب المرّيخ[PH Morelon: I.12:1, 43:2]