I'm currently working on a new package for R that interfaces with an API.
Most of the package's functionality requires users to supply an access key
that allows the package to work with the API. I want to display text
immediately upon loading the package that instructs/reminds users to enter
their access key before attempting to do anything (as the package won't
really work without it). I've searched the relevant help files for creating
packages but haven't been able find anything about how to do this. As an
example, library(Zelig) does what I'm trying to achieve.

Thanks for your help! And sorry if there's an obvious answer to this that I
am oblivious to.
-Thomas

-- 
Thomas J. Leeper

PhD Candidate, ABD
Department of Political Science
Northwestern University
leeper@u.northwestern.edu
http://www.thomasleeper.com

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