# NOT RUN {
# Run countries_list() to display the full list of countries
# For the example Chile is "chl" and China is "chn"
# What are the export opportunities of Chile?
# Year 2015, trade with China (HS92 4 characters)
# network("chl", "chn", 2015)
# network("chl", "chn", 2015, 1) # equivalent to last command
# }
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