Page 202 - Trackpad IT-402_Class-IX
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To display these non-printing characters in the document click on Show/Hide button ( ) present on standard toolbar.
        It works like a toggle key. You click once to switch it on and click again to switch it off.



                       Subject: What is Toggle key?


                       Toggle key is a key which works as alternate on and off button. For example, Insert, Scroll Lock,
                       Num Lock. Press Ctrl+F10 to toggle the non-printing characters.







                UNDO THE TASK

        This option lets you delete the last change made in the document.

        Click on the Edit → Undo option from the menu bar.                            To Undo:
        OR                                                                        Short key
        Click on Undo button     present on the standard toolbar. This button has a          Ctrl  +  Z
        drop-down arrow to allow you to undo multiple previous actions. Just click and
        hold the arrow key, a list of all the separate actions performed will appear. You
        can select as many actions as you want to undo.


                REDO THE TASK

        Redo helps you to restore the task that was previously undone. It is the reverse of Undo. For example, if you apply Blue
        colour to the font and you did not like it, you undo and get the original black color back but then you realise that blue
        is looking better than black so you use redo to restore the previous blue colour.
        Click on the Edit → Redo from the menu bar.                                   To Redo:

        OR                                                                        Short key
        Click on Redo button    present on the standard toolbar. This button has a           Ctrl  +  Y
        drop-down arrow to allow you to repeat any previous Undo operations.



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