Project Euler Forum

What do the icons mean on the topics? I know when one is red there is something new. But some of them are shaped like light bulbs, and some of the round ones have the "text" scrolling vertically.

The light-bulb shaped icons are for "sticky" topics which always stay at the top of their forum. I think the "scrolling text" has no meaning, the forum software just puts them in if it feels like it.

Two general points
- Red icons are unread items, blue/grey are read
- A star on any topic means you have posted in it

- Announcement
- Sticky topic
- Read topic
- Unread topic
- Read topic that you have posted in
- Unread topic that you have posted in
- Hot topic
- Locked topic
- Moved topic
- Forum with subforums (which have been read)
- Forum with subforums (which are unread)
- Link forum
- Attachment
- Go to last post in the topic
- Go to last unread post in the topic
- Subforum read
- Subforum unread