When the Task History button is clicked next to an item on the Maintenance Schedule screen, the Task History window will open. Use this window to view a record of completed maintenance tasks. You are able to edit tasks in this window, but you cannot create new tasks. (You must use the Completed Task window to record a newly completed task.)
Click the small arrow in the Date Performed field to open a calendar from which you can select a different date for a given task. Click the word [Memo] in the Comments field to open the comments window. In it, you can enter or edit comments about the selected task. Cells in which the word [MEMO] are in uppercase indicate that comments are present. [Memo] as it appears in this sentence indicates that the Comments field is empty for that record.