That is an overlay icon that indicates the object is new since last reload of the objects tree.
There are only a handful overlay icons and there is no overview of them. I will open a ticket.
Just to let you know we just started the BETA testing of the upcoming 10.0 version.
Among other improvements we've added descriptive tool tips on overlay icon in this release. Just hover an icon and the information is displayed.
I have a table that I just created during a build process. In the UI, there is a dot that is yellow in the center with a gradient to orange on the outer diameter. See example here:
What does this indicate?
Where in support documentation is legend shown that has examples of these things and their respective descriptions?