Flip Y
Flip Y will flip the selected piece(s) on the Y axis, across the length of the marker.
Flip X and Flip Y are restricted by the Piece Properties, Opposite Piece and On Marker Rotation Allowance.
Opposite piece must be set to Up/Down or Left/Right, to provide the correct pair.
Also, once both pairs or all bundles are placed, the Flip X and Flip Y will be more restricted to prevent you from creating incorrect pairs.
Icon & Location
See also: Marker Manual Toolbar