NVC Inquiry Correspondence

After emailing NVC the DS-3032, the Choice of Agent, NVC sent me 2 emails at the same time. First was the 4 pages with the MNL case number and "ACL UNIVERSAL" as the subject. It's basically an information and guidelines for the Applicants(my mom). The first page has the name of the Principal Applicant with NVC Case number, Invoice ID Number(IIN) and the beneficiaries ID. This letter can be brought to St. Lukes for Medical Exam to show proof the the application is currently at NVC for processing. With this letter, the beneficiary(my mom) don't have to wait the packet mailed from US. Embassy.