Blackmagic Design DaVinci Resolve Advanced Panel - Manual (Page 146)

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To join two clips together:
Drag the playhead to the edit point between the two clips you
want to join, and click the Join Clips button. Two clips must be
from the same media file to be joined.
To remove one clip from the Timeline, leaving a gap:
Move the playhead to intersect a clip you want to remove, and
click the Delete Clips button (the X). Or, right-click a clip and
choose Remove Clip from the contextual menu.
To remove multiple clips from the Timeline, leaving a gap:
Select all the clips you want to remove, right-click one of them,
and choose Remove Selected Clips from the contextual menu.
To insert a clip of black into the timeline:
Move the playhead to the in point of the Timeline where you want
to insert a clip, click the track number control of the track you
want to insert black onto, and then click the Insert Black button.
A black clip appears at the position of the playhead, pushing all
other clips in the selected track back.
To append a clip of black into the timeline:
Click the track number control of the track you want to insert black
onto, and then right-click in the Timeline and choose Append
Black Clip from the contextual menu. A black clip appears after
the last clip on the selected track.
To turn clip and playhead snapping on and off:
Right-click anywhere in the Timeline, and choose Enable Snapping
from the contextual menu. When snapping is turned on, the in
and out point of clips and the playhead all snap to one another.
Methods for adding, removing, and rearranging tracks:
To add a track to the timeline:
Click the Add Track button (the train track icon), or right-click
anywhere within the Timeline and choose Add Track from the
contextual menu.
To remove a track from the timeline:
Right-click within the track you want to remove, and choose
Remove Track from the contextual menu. If there are clips on a
track you remove, they are deleted from the session.