Anything but a marginal question. On the meaning of παρακείμενον σχόλιον and παραγράφεσθαι

A reappraisal is proposed of the meaning of Late Antique and early Byzantine attestations where the word σχόλιον is linked with participial forms like παρακείμενον („extracted note“, „explanatory excerptum“), and of the verb παραγράφεσθαι as used in subscriptions of Greek Medieval manuscripts provided with scholia („to be extracted / adduced / quoted“).