Snap to Lines
The Snap to Lines option allows dragged handles to be snapped to the endpoints or the midpoints of lines in the drawing canvas. This option is enabled by default in TouchDraw. To enable/disable this option:
Press on the Overflow Button to open the Overflow Menu.
Press on the Grid and Snapping Submenu.
Tap on the Snap to Lines option.
The Snap to Lines option will show a blue checkmark when enabled and no checkmark when disabled.