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.

per se stans‘substratum’

Latin

References: Alm. Gerard: I.1:8, f. 1va:37
Translation of:
Arabic: قائم بنفسه [Alm. MS Leiden: I.1:8, f. 2v:26]
Synonyms:
subiectum[Alm. Sicily: I.1:8, f. 1v:43]
subiectum[Alm. George: I.1:8, f. 4r:14]