Unknown definitions of instances output by CummeRbund

[Hunny]

Hi all,

Now I am trying to analyze the results of differential expression tests using CummeRbund. I simply loaded the output files of Cuffdiff into CummeRbund. And I got some basic statistics as follows.

CuffSet instance with:
8 samples
14712 genes
15339 isoforms
14950 TSS
14726 CDS
102984 promoters
104650 splicing
100184 relCDS

Here I am wondering why the instance numbers of TSS and promoters are different, as well as CDS and relCDS? If it is due to their different notions, what could they be used for, especially "promoters", "splicing" and "relCDS"?

Any explanations?