When you have defined a form for the LP print service, you can check it with either of two commands, depending on the type of information you want to check.
Show the attributes of the form by using the lpforms command. You can also redirect the output of the command into a file to save it for future reference.
Display the current status of the form by using the lpstat command. To protect potentially sensitive content, the alignment pattern is not shown.
If you are not sure about the name of an existing form, you can list the contents of the /etc/lp/forms directory to see the names of the forms there.