Explanation:

The shortcut Ctrl + P is used to open the Print dialog box.

Print Dialog Box:
The Print dialog box is a feature in computer applications that allows users to select a printer, specify the number of copies to be printed, choose the print range, and customize other printing options before sending the document to the printer.

Usage:
When you want to print a document or file, you can use the Ctrl + P shortcut to quickly open the Print dialog box. This shortcut is commonly used across various software applications, including word processors, image editors, web browsers, and more.

Steps:
To use the Ctrl + P shortcut, follow these steps:

1. Open the document or file you want to print.
2. Press and hold the Ctrl key on your keyboard.
3. While holding the Ctrl key, press the letter P.
4. The Print dialog box will open, displaying various options related to printing.
5. From the Print dialog box, you can select the printer you want to use, choose the number of copies, specify the print range, adjust print settings, and more.
6. Once you have customized the printing options, click on the "Print" button to start the printing process.

Advantages:
Using the Ctrl + P shortcut to open the Print dialog box offers several advantages:

1. Saves time: Instead of navigating through menus or using the mouse to access the print options, the shortcut provides a quick and convenient way to open the Print dialog box.
2. Consistency: The Ctrl + P shortcut is standardized across many software applications, making it easy to remember and use regardless of the program you are working with.
3. Efficiency: The Print dialog box allows you to customize various printing options, ensuring that your document is printed according to your preferences.

Conclusion:
In summary, the shortcut Ctrl + P is used to open the Print dialog box, which provides options for selecting a printer, specifying the number of copies, choosing the print range, and customizing other printing settings. This shortcut is widely used and offers a convenient way to initiate the printing process in various software applications.