How to understand if the mouse button / finger is stuck?

Question

Unity

The instructions say that if you press the button

if (Input.GetMouseButtonDown(0))
            Debug.Log("Pressed primary button.");

that will be action.
And how to track that it is not just pressed, but clamped, that is, I pressed and pull somewhere, the same applies to the finger, that I did not click it, but pressed and pulled somewhere, how to track this action?
How to understand when I let go, and when I pressed again ....

Answer 1

Read a little further "instruction" - there are other methods, for example suddenly GetMouseButtonUp