# \donttest{
# Query Apple's, GM's, and BTI's market cap and revenues
data('firms_US')
query.firms.dataframe(firms_US, which = c('cap', 'rev'))
# Query GM's and BTI's market cap and revenues
data('firms_US')
list2env(firms_US, envir = parent.frame())
query.firms.dataframe(GM, BTI, which = c('cap', 'rev'))
# }
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