What is the meaning of the two different recording icons used in Windows 7 Media Center?

Question

I am using Windows 7 Media Center with a digital TV tuner. If I am watching live TV and then use the mouse to bring up the control buttons at the bottom of the screen and press the record button once, then a single red circle 'recording' icon appears at the left side of the time slider. If I press the record button a second time, the 'recording' icon changes to a red circle with several shadowed circles fading off to the right. Pressing the record button a third time halts the recording.

What is the meaning of the two different 'recording' icons?

Answer 1

The first one is "record this movie/episode".

The second one is "record the whole series", e.g. repeats of a movie or other episodes of a TV series.