How do I create multiple blocks?

The following steps show how to make the label below:

Image
 

  1. Type "123" and then press the Enter key.
     
  2. Type "456", press the Shift key, and then press the Enter key. The cursor moves to the start of the new block.
     
  3. Type "ABC" and then print the label.

For information on how to type an uppercase letter, see the following:
> How do I type an uppercase letter?