A bank guarantee may be issued under different forms, including: 1. A bank signs a commercial paper as a reserve guarantor, or gives such reserve guarantee by a separate instrument to allow that several commercial papers are guaranteed together at one time; 2. An independent contract of guarantee is entered into; or 3. A letter of guarantee is addressed by the bank to the customer's creditor whereby the bank guarantees its customer's fulfillment of his obligations.
Interpretation and application must be checked against the official text and current version.