I was unable to do the "drag-and-drop". Because
SCJA Part I has this type of question, I need help ahead of time.
What I did was:
I moved the mouse over to the item which I wanted to pick up. I pressed down on the mouse, then moved the mouse while keeping the mouse in the "pressing down" position. I released the mouse at the destination where I wanted the item to be dropped.
Sympton:
The item was picked up and moved along with the mouse. When I released the mouse at the destination, the item did not get dropped at where I wanted it to be. Instead, the item went back to the original place.
Would you provide diagnostic comment on what I did wrong? Thanks.