I had some questions on this so I figured I would post the images and what they mean:
Two general points
- Red icons are unread items, blue/grey are read
- A star on any topic means you have posted in it
FORUM ICONS
READ FORUM ICONS
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/forum_read.gif)
- Read Forum
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/forum_read_locked.gif)
- Read Forum (Locked)
UNREAD FORUM ICONS
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/forum_unread.gif)
- Unread Forum
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/forum_unread_locked.gif)
- Unread Forum (Locked)
TOPIC ICONS
READ TOPIC ICONS
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/topic_read.gif)
- Read Topic
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/topic_read_mine.gif)
- Read Topic (Posted)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/topic_read_hot.gif)
- Read HOT Topic
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/topic_read_hot_mine.gif)
- Read HOT Topic (Posted)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/topic_read_locked.gif)
- Read Topic (Locked)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/topic_read_locked_mine.gif)
- Read Topic (Locked)(Posted)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/topic_moved.gif)
- Moved Topic (if it was posted in the wrong place we might move it!)
UNREAD TOPIC ICONS
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/topic_unread.gif)
- Unread Topic
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/topic_unread_mine.gif)
- Unread Topic (Posted)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/topic_unread_hot.gif)
- Unread HOT Topic
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/topic_unread_hot_mine.gif)
- Unread HOT Topic (Posted)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/topic_unread_locked.gif)
- Unread Topic (Locked)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/topic_unread_locked_mine.gif)
- Unread Topic (Locked)(Posted)
ANNOUNCEMENTS ICONS
READ ANNOUNCEMENTS ICONS
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/announce_read.gif)
- Read Announcement
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/announce_read_mine.gif)
- Read Announcement (Posted)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/announce_read_locked.gif)
- Read Announcement (Locked)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/announce_read_locked_mine.gif)
- Read Announcement (Locked)(Posted)
UNREAD ANNOUNCEMENTS ICONS
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/announce_unread.gif)
- Unread Announcement
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/announce_unread_mine.gif)
- Unread Announcement (Posted)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/announce_unread_locked.gif)
- Unread Announcement (Locked)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/announce_unread_locked_mine.gif)
- Unread Announcement (Locked)(Posted)
STICKY TOPIC ICONS
READ STICKY TOPIC ICONS
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/sticky_read.gif)
- Read Sticky Topic
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/sticky_read_mine.gif)
- Read Sticky Topic (Posted)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/sticky_read_locked.gif)
- Read Sticky Topic (Locked)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/sticky_read_locked_mine.gif)
- Read Sticky Topic (Locked)(Posted)
UNREAD STICKY TOPIC ICONS
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/sticky_unread.gif)
- Unread Sticky Topic
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/sticky_unread_mine.gif)
- Unread Sticky Topic (Posted)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/sticky_unread_locked.gif)
- Unread Sticky Topic (Locked)
![Image](https://www.phpbb.com/community/styles/prosilver/theme/images/sticky_unread_locked_mine.gif)
- Unread Sticky Topic (Locked)(Posted)