Catherine De Paula, Editor
Holding down Ctrl on a Mac allows lassoing in the timeline. To calculate the total duration of a number of clips, highlight the clips in a bin and press Ctrl-I (Command-I on Mac.) The Avid console will appear, with a total duration for all the selected clips.
On both PC and Mac, holding down Ctrl and double-clicking a title in a bin allows you to edit the title without altering the version within a bin or one already cut into a timeline.