ΠΡΟΣ ΛΑΚΡΙΤΟΝ
διοπτεύων ὁ διαιτῶν, εὖ ἐποπτεύων τὰ κατὰ τὴν ναῦν, οἷον δίοπός τις ὤν.
For Against Lacritus, a suit over a maritime loan, the scholiast explains a single word of shipping: the participle diopteuōn, keeping a close watch over the business of the ship, as a diopos would.
Demosthenes Scholia Scholia on Demosthenes: Against Lacritus in Greek in PDF
Demosthenes Scholia Scholia on Demosthenes: Against Lacritus in Greek in MD
Part of Scholia on Demosthenes