​​ Use a colon after "Attn" to make it clearly readable. A Letter of Instruction is a detailed document that provides specific guidance on how to handle administrative tasks associated with one's stock accounts.Write the sender's address in the top-left corner. Write your address in fairly small print, so you have plenty of space in the center of the envelope. The Attention Line is placed above the Recipient Line, that is, above the name of the firm to which the mailpiece is directed. May I have your attention please. The fire alarm testing is complete. Look to the teacher when they can't read a word. Phonetic Spelling Instructions. Although the pronunciation of many names is obvious, some require special attention.