What does the bit depth symbol mean (*, #,..)?

In the title bar of the image in PS (CS3 on Vista 32b, in my case) it is indicated what "mode" the picture is in (Image>Mode), eg for an RGB picture with 16 bit color depth it says "[file name] @ [scaling] (RGB/16)".

The bit depth can be followed by various symbols. I have seen for example: (RGB/16*)
(RGB/8#)

What do those symbols (*, #,...) mean?

They have to do with color profiles, not bit depth.

< http://www.earthboundlight.com/phototips/photoshop-pound-sig n-asterik-title-bar.html>

"If you see an asterisk (*), it means your image is in a color profile other than your working space default...If instead you see a pound sign (number sign, #), it means your image has no color profile associated with it."

Perfect! Thanks.

Very useful link.