That syntax usually refers to television episodes.
It can be written many different ways, but most often it appears "S01E01" which would mean Season 01, Episode 01.
In your case, it appears to be referring to Season 4 Episode 6.
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The season began with auditions held during the summer of 2011.
The Program will premiere on network Television on January 22 2012.
The first show of the new season is on 01-18-2012
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The end of season one, and through out season two.
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It was the first episode in season seven (the season that just
aired this year). It was called Truth or Consequences.