Caution Symbols
The main Projects area can help provide guidance to workspaces, projects and summary tasks that require attention. Yellow or red caution symbols appear in the checkmark (status) column of items that require attention.
A yellow caution symbol will appear in the checkmark (status) column next to a workspace, project or summary task when one of its subtasks is late, but the item itself (workspace, project or summary task) is not yet late.
A red caution symbol will appear in the checkmark (status) column next to a workspace, project or summary task when that item is itself late. This occurs when the latest task within the item in question is late.