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.

der wahre Grund ‘assume, establish (in reality, as model)’

German

References: PH Nix: I.1:4, 71:29
Translation of:
Arabic: الوضع الحقيقي [PH Morelon: I.1:4, 17:3]