This tab is used to update the so-called order additional text, which can be linked to a manufacturing order. You can then read the additional text in the Manufacturing Order Info procedure or in the Post-Calculation procedure. The Order Additional Text setting in the Update Employee procedure, determines if the tab shall be visible or not.
In order to update the additional text, you check in the "Modify order text" check box. The modification is then saved automatically when the operation is finished/partial reported by Execute.