Final answer:
To display 'Hello World!' in a graphics window, a specific command from an appropriate graphics library or framework must be used. Examples include 'create_text()' in Python's Tkinter, 'drawString()' in Java's Swing, or 'draw()' in C++'s S-F-M-L.
Step-by-step explanation:
To display text such as "Hello World!" in a graphics window, you would typically use a programming command that is specific to the graphics library or framework you are using. For example:
- In Python with the Tkinter library, you could use the create_text() method of a canvas object to display text.
- In Java with the Swing library, you could use the drawString() method of a Graphics object.
- In C++ with the S-F-M-L library, you would use the draw() method after creating a Text object and setting its string property.
- When working with HTML canvas, the fillText() or strokeText() functions are used to render text.
The exact command will depend on the programming environment and graphics library you are working with.