Guidance for filling out the form is listed in blue text throughout the document. Learn what a letter of agreement is and how to write one, including a template and example to help you get started crafting your own.A letter agreement is a written legal document that is made between two parties who want a simple way to make their discussions of a transaction official. These basic templates may be used to create a Letter of Agreement (LOA). A Letter of Intent is a written document that serves as an initial agreement between two parties concerning the terms of a possible purchase or transaction. Customize any template in minutes with PandaDoc. A Letter of Intent is a written document that serves as an initial agreement between two parties concerning the terms of a possible purchase or transaction. Create a Letter of Agreement in minutes using a step-by-step template. Two people are working from one laptop together in a restaurant. Ohio state laws for non-disclosure agreements.