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Step 3:  After the region has been chosen, a boundary (such as a rectangle, ellipse, marquee, etc.) is visible all the way
                         around it.


                                                                                                           2

                                                                                      Boundary
                                                                                      around the
                                                                                      image





                              3                                                                            1









                 If a user presses and holds down the Ctrl, Shift, and/or Alt keys, the behaviour of selection tools changes. These keys
                 and/or key combinations are referred to as key modifiers since they could be connected to a mode.
                                 Key Modifiers                            Purpose

                                Ctrl            Prior to drawing a selection: Removes from selection (Subtract Mode)
                                                While making the selection: expand from the centre

                                Alt             Moves frame of the current selection
                                Shift           Add a selection (Addition Mode)

                                Ctrl + Shift    Intersection Mode is chosen

                                Ctrl+Alt+Drag   Move the selections
                                Space Bar       Helps in navigation across the image

                                Ctrl + I        The selection is reversed



                 Intelligent Scissors
                 The  Intelligent  Scissors  tool  shares  certain  characteristics  with  the  Lasso,  some  with  the  Path  tool,  and  some
                 characteristics  exclusively  with  it.  When  attempting  to  identify  a  zone  with  prominent  colour  changes  near  the
                 boundaries, it can be helpful. To utilise the Scissors, click the boundaries of the zone you want to pick in order to
                 establish a collection of “control nodes,” also known as anchors or control points. Following any high-contrast edges it
                 can locate, the tool creates a continuous curve that passes through these control nodes.
                 Perform the following steps to use the Intelligent Scissors Tool:
                 Step 1:   Open an image in GIMP.
                 Step 2:   Click on the Intelligent Scissors    tool in the Toolbox.
                         OR
                         Click on Tools   Selection Tools   Intelligent Scissors option.

                         OR
                         Press I on your keyboard.
                 Step 3:  Press Enter key outside the boundary.

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