Auto Clean Up（CTL+U）is very useful, but in some case this function seems a little strange.
1\When I select nothing of the diagram(clean up the whole diagram by labview's default settings),and press CTL+U, it does not work , no any movement of the diagram. I know some parts of the diagram must move if the Auto Clean Up works, but it didnot .
2\When I select parts of the diagrams, for example ,there are 3 WHILE loop , and I choose one(click the WHILE loop's edge line) , the select part can do Auto Clean Up,but other 2 WHILE loops become a little in a mass and become worse. For this reason , I can not finish solving one problem only to find another cropping up.
3\ In some case , though my VI seems out of order, it can run, after I press CTL+U,things become even worse, some error appear ,the VI can not run .
Is there an detailed instruction of the use of CTL+U?