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.

northern, lit. under the two bears ‘northern’

English

References: TB Robbins: 123
Translation of:
Greek: ὑπὸ τὰς ἄρκτους [TB Robbins: 2:2, 56]