Check your typing speed in one minute typing test. Compare with the avarage WPM score.In this article, we explain what an official letter is and how to write one, plus we provide a template and example of an official letter for you to reference. If the applicant cannot hand write, they must put their mark "X" and include a printed name and signature of a witness. Click the lesson to begin. Introduction to Typing. 1. The text of the model letter is exceptionally brief. Most appeal and request letters require a page or two. a. To Write or to Type – That is the Question! Learn how to write the best donation request letters to secure support for your nonprofit, including six templates to get started.