While ABA can be used in a natural setting (a playground, for example), it is not intended to build emotional or social skills. So, for example, while ABA might teach a child to shake hands or greet another person with a handshake, it won't help that child to feel an emotional connection with another person.
Definition of an invoice. An invoice is a document that a business issues to its customers, asking the customers to pay for the goods or services that the business has supplied to them. Invoices can be issued either before or after the goods or services are supplied.
There are three important things to keep in mind when creating and sending a proforma invoice: 1  It is not a true invoice. Issuing a proforma invoice does not mean that a customer is required to make any payments on the products or services listed.  It is not recorded as an account receivable by the seller.