Freezes objects so that they cannot be moved, resized, or removed with the mouse. The input is the name of an object on the page, or a list containing many names. A page name can also be used as input to freeze all the elements contained in that page.
For example, if you have “frozen” a text box, you can’t move it or resize it. You can open its dialog box, type text in it, or use primitives such as get and set to make changes. If a turtle is frozen, you cannot use the mouse to change its shape, its size, stamp it, or remove it. Unfreeze undoes the effect of freeze.
