| Hi Michael, 
>>Which current label would you put the toggle on?
 
The "Angle" label, the slider would apply to the "Maximum distance" option, then. 
I admit this options aren't mutually exclusive ones. But when I set a distance to surface for meshing in Rhino, I choose very small value like 0.005 units, so I guess, in such situation, the Angle doesn't influence the process of meshing.
 
   
Petr |