Toolbar / Icon:
Menu: Select > Deselect All
Shortcuts: T, N | Ctrl+K (Mac: ⌘K) | Ctrl+D (Mac: ⌘D) | Ctrl+Shift+A (Mac: ⇧⌘A)
Commands: deselectall | tn
Deselects all entities. Use this tool to make sure that no entities are selected. Alternatively, you can also click into an empty area of your drawing.