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.

das Gestirn Mars ‘Mars’

German. – Grammar: n.

References: PH Nix: I.7:3, 79:24; I.12:1, 95:7
Translation of:
Arabic: كوكب المريخ [PH Morelon: I.7:3, 25:5]
Arabic: كوكب المرّيخ [PH Morelon: I.12:1, 43:2]