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.

Work A.2.1

Ptolemy
كتاب أربع مقالات في الأحكام
Kitāb Arbaʿ maqālāt fī l-aḥkām (tr. al-Biṭrīq/ʿUmar ibn al-Farrukhān)

MSS

Cairo, Dār al-kutub, mīqāt 123, ff. 1r–73r (undated)

Cairo, Dār al-kutub, mīqāt Khalīl Aghā 5, ff. 1r–52r (undated)

Uppsala, UB, O Nova 550 (Zetterstéen 203), pp. 1–151 (1304/1887)