What different breakpoint icons mean in Eclipse?

When working with breakpoints in Eclipse I sometimes notice that they have different icons / annotations (markers on left sidebar). Sometimes it's just a blue ball, sometimes it has a checkmark on it and sometimes it is crossed. What do all these annotations mean?

• blue ball: regular breakpoint, active (possibly with a hit count set)
• empty ball (i.e. white): breakpoint has been disabled (remove checkmark in the breakpoint view, or disable in context menu)
• diagonal line through breakpoint: all breakpoints have been disabled (button skip all breakpoints in breakpoint view)
• question mark next to breakpoint: a condition is active for this breakpoint (look under properties of the breakpoint)

The tick means that the breakpoint has been successfully set. I think it may only appear when you're doing remote debugging; when you add a breakpoint, it starts out as a plain ball, but once the JPDA agent in the remote system has been told about it, and has confirmed it's set, then it gets a tick.