As replied in the comments: This looks like the visiblity Indicator to me, mentioned in the changelog.
What do the coloured dots in firephp output mean?
Question
I've seen green, orange, & grey dots, and they don't seem to correspond to variable types… any ideas?
I didn't find any mention of them in the FAQ, etc: http://www.firephp.org/Wiki/Reference/FAQ
Solution
Licensed under: CC-BY-SA with attribution
Not affiliated with StackOverflow