Watermarking images in cpg 1.48

[wwedivas]

For some reason when I go into the config menu there is no option to watermark images. For the past 3 months I have been manually going into photoshop and editing images so they would have the text of my url on them. I just realized now that I could have been saving hours of time and additional file sizes.. by simply watermarking images. I, of course, have no clue how to watermark images.. and how that works either. First thing's first.. how can I make the watermarking option available in the configuration panel?

[Stramm]

everything's covered here
http://forum.coppermine-gallery.net/index.php?topic=28367.0

[Joachim Müller]

Additionally: Mods: Watermarking & image manipulation