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  Ctrl + N - New Drawing: Opens a new, blank drawing file. Ctrl + O - Open Drawing: Opens an existing drawing file. Ctrl + S - Save Drawing: Saves the current drawing. Ctrl + P - Plot: Opens the Plot dialog for printing or plotting the drawing. Ctrl + Z - Undo: Reverses the last command or action. Ctrl + Y - Redo: Reverses the Undo command. Ctrl + C - Copy: Copies selected objects to the clipboard. Ctrl + X - Cut: Cuts selected objects to the clipboard. Ctrl + V - Paste: Pastes the contents of the clipboard into the drawing. Ctrl + A - Select All: Selects all objects in the current drawing. Ctrl + Shift + C - Copy with Base Point: Copies selected objects with a specified base point. Ctrl + Shift + V - Paste to Original Coordinates: Pastes copied objects to their original coordinates. Ctrl + Shift + K - Blocks Palette: Opens the Blocks palette for inserting and managing blocks. Ctrl + 1 - Properties Palette: Opens the Properties palette for viewing and modifying object pro

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 About Java important topics theory and practical with example Sure! Here are some important topics in Java along with a brief explanation and practical examples: 1. Object-Oriented Programming (OOP):    Java is an object-oriented language, and understanding OOP principles is crucial. Concepts like classes, objects, inheritance, polymorphism, and encapsulation are essential.    Example:    ```java    class Animal {        void sound() {            System.out.println("Animal makes a sound");        }    }    class Dog extends Animal {        void sound() {            System.out.println("Dog barks");        }    }    public class Main {        public static void main(String[] args) {            Animal animal = new Dog();            animal.sound(); // Output: Dog barks        }    }    ``` 2. Java Basics:    Learn about data types, variables, operators, control structures (if-else, loops), and basic input/output.    Example:    ```java    public class BasicsExample {