I have an idea for a photograph where the ability to "draw" on the print with bleach would be very useful; being able to produce very thin white lines. You could also sign prints in black areas like this. Anybody ever fooled around with trying to get really fine detail from farmer's reducer? I know that lots of printers have done this kind of thing, like W. Eugene Smith, presumably with small paint brushes, but what about a ruling pen? Will the liquid flow and diffuse too much? Just curious, thanks for your thoughts..