Keep up to date your personal or work activities, all have a place in recalls. No need to memorize and do track dates of your tasks, remember do it for you, you classifies activities in strips depending on the status and date function: 1) duties on white, not yet begun and if you want can vary the start of it 2) in green, everything goes as planned had 3) in red, danger on the dates you thought, the task could not be performed.