The editor places a part template in your file.
When the template is displayed, the editor highlights the first area where you need to type information; in this case, specify the part name. After you type, press Tab to highlight the next area where you need to type.
You can use the Tab key repeatedly, and this use of the key is available until you reach the end of the file or until you change your in-file position in any other way.
The ability to select a string is more useful in other contexts, such as when you want to type a variable name quickly.
The editor places the function template in your file.