Miscellaneous letters are a type of letter that may be used for a variety of purposes, such as denying or terminating a commercial partnership or expressing condolences to a friend or family, for example, if he or she has been in a vehicle accident. A letter of intent is also included in this category. They are usually short documents that do not require a formal signature. Commercial partnerships should end with a notice of termination to inform future business partners that the relationship has ended and should include any necessary consents to terminate the contract. The sender's address on a letter of credit must contain at least the surname and given name of the applicant or beneficiary under the credit. If you want to identify your company instead, you can use an official firm stamp or logo, an authorized agent's seal, or a special-use postage meter mark. Letters of credit are used by businesses to exchange payments for services or goods without using cash. The party who gives the letter of credit gets to decide what kind of payment will be made when the letter expires (for example, a bank check). The recipient of the letter can accept or reject the offer. If the recipient accepts, the process works just like a normal transaction; if not, nothing more than an acknowledgment is needed from the sender. A letter of credit is different from a guarantee because if the recipient does not pay the issuer, the issuer has the right to demand payment from the sender.