Description of icons in "Media & Folders" view

[ChrisPlak]

Where can I find a description of the icons that are used in the "Media & Folfders" view? 

If a directory is offline when I hover over that folder I'm told as such.

I have a folder with what looks like a blue circle.  No idea what this is.  I've wasted 45 minutes looking through the help system with no success.

Thanks for your help

[Mario]

IMatch displays a blue 'refresh' icon when IMatch has detected that the folder has been modified on disk.
IMatch will rescan the folder automatically in the background, which means that the blue refresh icon is usually displayed only temporarily.

Search for rescan in the Help index, then click on folder in the result list to find detailed information.