Grass Valley NewsEdit LT v.4.1 - Manual (Page 127)

Match Frame to Source
Digital News Production 127
Match Frame to Source
Match Frame to Source finds a frame you select from a Timeline input source
and loads it into the Source Tool, using that frame as the Mark In point.
To match frame to the Source:
1. Select a clip on the Timeline.
2. Select the frame you want to match.
3. Press F4 on the keyboard.
NewsEdit LT finds the frame on the source and loads it into the Source Tool
as a new Mark In point.
4. To view the frame source, Press F7.
To use this footage in a clip, press F12 to record to the Timeline.