Discovery on packages

Janna -
    Another thing that's sometimes useful with a new package
is to run the example function, like

example(TTR)

This will run the examples from the documentation to give
you a quick idea of what the package can do.


                                        - Phil Spector
 					 Statistical Computing Facility
 					 Department of Statistics
 					 UC Berkeley
 					 spector at stat.berkeley.edu

If I download a package -- how can I explore what it does? For
instance, I downloaded the TTR package of off CRAN -- but how can I
find out what it does? Is there a type of API doc for each package? JB

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