Allows you to add an image watermark to a PDF file.
Example
Running this code will put a watermark image "E:\Example Folder\Sample Watermark.png" with the following properties:
- Opacity: 30%
- Position (X, Y): -1, -1
Applying it to the PDF file "E:\Example Folder\Test File.pdf", and saving it to "E:\Saved Folder\Sample.pdf".
plugin command("Document Automation.dll", "pdf watermark image", "E:\\Example Folder\\Test File.pdf", "E:\\Saved Folder\\Sample.pdf", "E:\\Example Folder\\Sample Watermark.png", 30, "-1,-1")
