How to - Replace a Watermark on a PDF Previously applied watermarks can be replaced with different text when required. This shall be used when changing from ‘For Training Only’ to ‘Uncontrolled if Printed’ watermarks. Open the .pdf document to be modified as before. Select ‘Tools’ then ‘Edit’ as before. Select ’Update Watermark’ Select required label from the ‘Saved Settings’ box Select ‘OK’ Select the ‘Close’ button to close the edit options Save the file as PDF using File > Save