From site:
The Letter Generator tool is designed to help students learn to identify all the essential parts of a business or friendly letter, and then generate letters by typing information into letter templates. A sample letter is included, and students can learn about the parts of a letter by reading descriptions of each part. Once students have become familiar with letter formats, they are prompted to write their own letter using a simple template. Students follow the steps and fill in specific fields in the template (for example, heading, salutation, closing, signature, etc.). They may even add a decorative border and postscript to the friendly letter. The finished letter can then be previewed, edited, and printed. This useful tool provides step-by-step instructions for familiarizing users with the necessary elements of written correspondence, and can serve as an excellent practice method for composing and proofreading both formal and informal letters.