Letters of intent may be advanced in the world of commercial real estate. In some specific domestic markets (for example in principal to principal deals between upstream Petroleum traders and producers in the same country, or certain Joint venture projects) they may be found. But there is no underlying and supported standard international application for the Letter of Intent.
Many newcomers to the world of international business are given confusing advice on the proper documents to use in their business. The Letter of intent / LOI is a document that many refer to, but actually is poorly understood. Without proper understanding of the document you might find yourself making mistakes in your business that will cause you great embarrassment.