Drag empty spacePan around the timeline canvas.
Ctrl/Cmd + scrollZoom the timeline horizontally.
Drag sidewaysMove or resize elements in 1-second steps.
Shift + dragMove/resize in 5-second steps, and snap element edges to other elements.
Drag sideResize the original element shorter or longer. Active duplicates stay locked directly after it and follow the original length/settings.
Drag up/downMove elements between tracks. The element follows the track under your mouse.
Alt + drag up/downAdjust the element lane inside the same track without switching tracks.
Overview barDrag the viewport to jump through the full timeline.
Overview handlesDrag the sides of the overview window to zoom in/out.