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.

ὀρθογώνιον ‘lit. rectangle, it denotes multiplication between two line segments’

Greek. – Grammar: adj used as noun.

Translated into:
References:	Alm. Heiberg: I.10, 33:6
Arabic:	سطح / السطح القائم الزوايا [Alm. MS Tunis: ]
Arabic:	سطح [Alm. MS Leiden: f. 6r]
Modern translations:
English:	lit. rectangle, it denotes multiplication between two line segments