Undo: Undos the last change to the panel
Redo: Redoes the last removed change
Left: Aligns the selected instruments with the left of the first selected instrument
Right: Aligns the selected instruments with the right of the first selected instrument
Top: Aligns the selected instruments with the top of the first selected instrument
Bottom: Aligns the selected instruments with the bottom of the first selected instrument
Lock: Locks all selected instruments in place so they are not inadvertently moved
Unlock: Unlocks all selected instruments to allow for movement / replacement
Group: Groups all selected instruments in place
Ungroup: Ungroups selected instruments to allow for independent movement
Spacing: Vertical / Horizontal spacing between two instruments
Delete: Removes all selected instruments
