Snap to guides allows you to align objects with the drawings canvas and other objects. With this option enabled, guides appear whenever you move an object into alignment with the border of another object. These guides also appear when you move an object to the horizontal or vertical center of the drawings canvas.
To enable snap to guides, right-click in the drawings canvas and select Snap to guides, or click Edit > Snap to guides.
You can quickly move, drag, resize and rotate objects using keyboard modfiers when performing other actions.