What character indicates unsaved changes in a worksheet?

The character that indicates unsaved changes in a worksheet is represented by an edit pencil. This symbol is widely recognized in various applications and environments as an indicator that modifications have been made and are yet to be saved. The pencil suggests the presence of ongoing edits, prompting users to take action to preserve their changes before navigating away from the worksheet.

Other symbols, such as asterisks or flags, may be used in different contexts or applications to represent various types of notifications or statuses, but specifically for indicating unsaved changes in a worksheet, the edit pencil is the most accurate and intuitive choice.