[BioC] differences among pd.mogene.1.0.st.v1, mogene10sttranscriptcluster.db and mogene10stprobeset.db

[Javier Pérez Florido]

Dear list,
What are the differences between these two packages 
(mogene10sttranscriptcluster.db and mogene10stprobeset.db)?

As far as I know, the first annotation package is used when ST arrays 
are normalized at the "core" level and the second one when data is 
normalized at the "probeset" level. Is that right?

Another question is related to the pd.mogene.1.0.st.v1 package, which is 
the annotation package used in conjunction with the oligo package. What 
are the differences between this package and the others 
(mogene10sttranscriptcluster.db and mogene10stprobeset.db)?

Thanks,
Javier