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.

α CMa ‘α CMa’

English

References: TB Robbins: ?
Translation of:
Greek: Κύων [TB Robbins: 2:10, 92]
Synonyms:
Sirius / the bright star in the mouth (of the Dog) [TB Robbins: 57]