Overlay Mode superimposes contextual tools over the drawing based on context of the current selection. TouchDraw currently supports three types of overlay modes: Nudge, Line, and Connector Type.
The Show Overlay toggle must be set to "ON" in the Settings Menu to use this application feature. To turn on this feature:
Press on the Settings Button located in the Top Toolbar of the Drawing Editor.
Perform a Touch/Drag combination toward the right or Tap on the right side of the Show Overlay toggle to enable this feature.