Left-dragPan the view Right-dragOrbit the view Both buttons + dragZoom in and out ScrollZoom in and out Shift + ScrollMove the view up and down Tap a markerBuild from that open end Tap againRemove a stray open end Tap a pieceSelect it to delete 1 – 8Pick a piece type S X W R T B C PSame, by letter TabNext open end SpaceCycle variation (mirror / attach point) EnterAdd the piece DelRemove selected or last W A S DBrick mode: nudge sideways 1 stud Q EBrick mode: nudge up/down 1 stud Shift + W A S D / Q EBrick mode: fine nudge, 1mm off the grid VBrick mode: toggle Place / Select tool Click a brick (Select tool)Select it and everything touching it W A S D / Q E (Select tool)Move the selected bricks R F (Select tool)Rotate 15° around the clicked brick Shift + R F (Select tool)Fine rotate, 1° at a time C (Select tool)Duplicate the selected bricks, one stud over Del (Select tool)Delete the selected bricks GBrick mode: reset to the plain main grid