Hi Riadh (and everyone)
This is an undocumented feature!
With a 2D T3 Scalar mesh in a 2D View:
- Edit -> T3 Mesh -> Options -> Select Nodes Only
(1) When "Select Nodes Only" is checked then you cannot select elements or edges
(2) When "Select Nodes Only" is NOT checked then you CAN select elements and edges
The Windows registry is used to save the information (checked or not checked) so that the next time you run Blue Kenue the same value will be used.
This means that if you uncheck the value and then close Blue Kenue (and then possibly restart your computer) the menu item will still be unchecked the next time you start Blue Kenue days or weeks later.
Or put another way, the menu state is saved across application restarts.
Hope that helps?
Kindly,
Alan