A personal organizer, also known as a datebook, date log, daybook, day planner, personal analog assistant, book planner, year planner, or agenda (from Latin agenda – things to do), is a portable book or binder designed for personal management. It typically includes sections such as a diary, calendar, address book, blank paper, checklists, and additional useful information like maps and telephone codes.[1][2] It is related to the separate desktop stationery items that have one or more of the same functions, such as appointment calendars, rolodexes, notebooks, and almanacs.