

Specifically, you create a PrintDocument object to represent the document you are printing.

These days, printers are not attached to LPT1 anymore. You used to be able to print these files to your local printer by using the command COPY /B C:FILENAME.PRN LPT1. Sometimes you will end up with one of these files and need to print it. It’s basically a generic output file that printers can understand. A PRN file is a type of file that can be read by printers.
