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.
The commercial invoice is essentially a bill (i.e. invoice) from the seller (the exporter) to the buyer (the importer) describing the parties to the agreement, the goods to be sold, and the terms involved, as agreed between the exporter and importer.