Grass Valley EDIUS Pro v.7.4 Reference Manual - Manual (Page 210)

Chapter 6 Editing Timelines — Switching the Editing Mode
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Switching the Editing Mode
Switching the Mode when Placing/Moving Clips
You can switch clip operations when placing clips on the timeline or operations for linking clips on the track by the editing mode.
Insert/Overwrite Mode
In the insert mode, if a clip exists at the position where you place a clip, the new clip moves the existing clip backward and is inserted at the
position in between.
In the overwrite mode, if a clip exists at the position where you place a clip, the new clip overwrites part of existing clip overlapped by the
new clip.
1)
Click [Toggle Insert/Overwrite Mode] on the mode bar.
f Each click switches between the insert mode and the overwrite mode.
f : Insert mode
f : Overwrite mode
f The current mode (insert mode/overwrite mode) is displayed on the status bar of the timeline.
1 Alternative
f Switch overwrite/insert mode: [Insert]
Sync-lock (Synchronization)
The result of track editing such as insertion or moving a clip affects other tracks, too, when sync-lock is set to a track.
Example:
When sync-lock is set to all three tracks and a clip has been added in the insert mode: