MailStream Plus what is standard [A] mail?

Product Feature:ML TYP

Operating System: All platforms

The term Standard A used in the USPS postal environment is now referred to as Market Mail or 3rd class mail. That term
applies to letter, flat and parcels and can be setup in the MailStream Plus application using ML TYP parameter positions.
Please refer to the MailStream Plus™ Release [current version] Reference Guide For All Platforms
UPDATED:  August 29, 2017