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.

approximativement ‘approximately’

French

References: PH Morelon: I.12:4, 42:24
Translation of:
Arabic: بالتقريب [Alm. MS Tunis: . – PH Morelon: I.12:4, 43:17]