Kdenlive/Manual/Clip Menu
Clip Menu
The functions controlled from this menu effect the clip that is selected in the timeline.
Markers Menu Item
The popout menu allows you to Add, Edit and Delete Markers
Automatic Transition
Split Audio
Selecting this causes the audio portion of a clip to be placed on an audio track in the timeline. The video track and the audio track will be grouped together. This group can be removed using the Timeline>Ungroup Clips menu option