Short reports are usually informal reports. Generally, these reports serve current needs and tend to have a limited readership. They tend to be between one and five single-spaced pages (ten double-spaced). They also tend to express a first person point of view. They use a personal style — we and you and a familiar vocabulary that conveys informality. They are often formatted for internal and external use.
Most informal reports follow the memo or letter format and are referred to as memo-reports and letter-reports.
Use the memo-report format when writing internal or external communications about routine operations and familiar subject matter. Use it to inform colleagues about recent experiences — field trips, meetings, and seminars, and to report on achievements.