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Interface of Scratch

                 The Scratch application window has the following components:

                                         Tabs               Go button   Stop button






                                                                                     Stage Area
                   Blocks
                  Palette                                                                                   Backdrop
                                                                 Script
                                                                                                            Sprite


                                                        Coding area







                                                                                       Sprites Pane




                    Stage: It can be viewed in two sizes small and large. Stage uses a 2D coordinate system with
                    X(Horizontal location) and Y(Vertical Location) coordinates to mark the location of the sprite
                    on the stage. The center of the stage is at (0, 0).
                    Backdrop: It is a background of the stage that sets the scene for your project. You can have
                    multiple backdrops and switch between them during the execution of your project.
                    Sprite: It is the character which acts on the stage. The default sprite in Scratch is an orange
                    cat. Every sprite has an x and y position on the Stage where x is the position of the sprite from
                    left-to-right and y is the position from top-to-bottom.
                     Go Button: It is the green flag and when you click on it, it runs a Scratch program.

                     Stop Button: It is the red button which on clicking stops the running Scratch program.
                     Sprites Pane: It shows all the details of sprites and backdrops used in a project. You can add,
                    delete, see the name and location, increase and decrease the size of a sprite. Similarly, you
                    can add or change the backdrop.
                     Blocks Palette: It displays the categories of blocks based on their functions and uses.
                     Script: Script is a collection of a number of stacked blocks. Script is actually a program which
                    gives the instructions in the form of blocks. A script must have at least two blocks.

                     Coding Area: It is the area where you stack your blocks to create scripts. When we click on a
                    script, all the blocks execute from top to bottom.
                     Tabs: Scratch has mainly three tabs which are described below:
                        Code Tab: It contains block categories and the list of blocks in a category. The categories
                      are—Motion, Looks, Sound, Pen, Events, Control, Sensing, Operators, Variables, and
                      My Blocks. All block categories are of different colours. The blocks connect to each other
                      like a jigsaw puzzle and create scripts.


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