Constraints
The Constraints options page controls the global settings for constrained objects.
Appearance
Constraints color
The halo color on the constrained curves.
Constraints failure color
The color displays while dragging a constrained object to a position that constraints cannot be solved.
Show halo on constrained curves
Draws strokes around constrained curves.
View icons
Show icons
Toggles the display of constraint icons that show around constrained objects in viewports.
Horizontal to view
Makes the constraint icons in viewports always face to view.
Icon size
Move the slider to change the pixel size of constraint icons in viewports.
Sketch
Automatically create coincident constraints
Automatically create vertical and horizontal constraints
Automatic vertical and horizontal constraint angle tolerance