How can I enter a 13-digit or greater account number at the Mekorma Checkbook Setup?

Q:  We have just opened a new checking account at one of our banks. The new account has a 13 digit account number. The Mekorma Checkbook Setup > MICR Line Quick Entry window will only allow us to enter a 12 digit account number.
 
A:  Click on the spaces at the account number of the Mekorma Checkbook Setup main window to fill in account numbers greater than 12-digits.