Use ", at" for a film's pinpoint

Warning²Federal courts, Illinois courts22nd edition only

A pinpoint into a film is written as a comma, the word “at”, and the clock reading — the same form a page pinpoint takes.¹

1. 1R. 18.7.1 Films. Tables: R. 3.2(a) Pages.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.