hi massive, thanks for the valuable and assiduous content on the forum, I write little but I learned so much thanks to the questions of others and your relative answers.
I find myself also this problematic, who knows that I command f I pressed by mistake this time, appears to me just that symbol alongside the pointer, but it is not that related to the cyclic selection, that is the two semi-subsequent squares, but the two squares to "bandierina" just as in photo posted by cescobi.
seems the exact symbol of "deduction constraints" but I have the function disabled and also activating or deactivating it is not removed.
What could be?
I don't understand why he thanked when the answer was inaccurate.
thanks to the link, in that discussion I had already passed before or after reading this, but sincerely with elimivinc I couldn't do anything, even lighting everything.
fortunately that I worked only on the improvement of a dynamic block, I noticed immediately and solved with a nice dose of well-set ctrl+z having previously saved the block.
very interesting the list of commands for the constraints of which I have never served nor have I ever had until now need, I will deepen. :
thanks for the answer and good continuation.