You’d see it in commercials, they’d demo it in stores, and it seemed to represent a sort of shift where the TV image was no longer strictly confined to the solid frame of the box it came in.
Also to refine that you can use the Page Up and Page Down keys to move frame by frame within the timeline, and adding shift to the mix moves you 10 frames either way.
你可以使用 Page Up 和Page Down 键来以帧为单位移动时间标尺，另外，如果想要更快移动，加按Shift。
3
Whether a shift to a more Republican frame of mind is a shift to moderation or not is, of course, a matter of opinion.