Certainly, here's how to make "Hello World" appear on the screen in Python after entering a specific command:

1. Open a text editor such as Notepad or Sublime Text.
2. Type the following code:
```python
print("Hello World")
```
3. Save the file with a .py extension, for example, helloworld.py
4. Open the command prompt or terminal.
5. Navigate to the directory where you saved the file using the cd command.
6. Type python helloworld.py and press Enter.

The output should be "Hello World" displayed on the screen.
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