Memos, on the other hand, are believed to be brief notes. Memos are documents used to record things that we need to remember, as the name "memorandum" suggests. An action memo is just that; it advises recipients of tasks that must be completed at a specific time. Action memos can also be called task lists. A memorandum is used to record information for future reference or to notify others of actions that need to be taken. They are usually written in the present tense and signed by the writer. On the other hand, an action memo is written in the past tense and shows what action was taken previously. It is not signed by anyone except the person who takes the action. Memos are usually short documents that contain only facts and opinions needed to complete a particular task or provide information to others. They are usually not published in newspapers or magazines but are sent instead via email or posted on office walls. Memorandums do not have formal rules regarding length or style; however, they are usually not longer than one page. Action memos are usually shorter than memorandums because they only contain facts necessary to complete a task or report an event. In terms of content, memorandums can be made up of different items such as quotes, ideas, reports, etc. Action memos usually contain only one type of item: tasks to be completed by certain dates.