# requiring 'sinatra' brings in 'sinatra/base' and 'sinatra/main', which
# triggers the top-level hackery. Also required is 'sinatra/compat', which
# includes support for things I propose we deprecate.
require 'sinatra'

enable :sessions            # Sinatra::Application.enable :sessions
set :foo, 'bar'             # Sinatra::Application.set :foo, 'bar'

configure :production do    # Sinatra::Application.configure :production
  ...
end

helpers do                  # class Sinatra::Application
  def blink(text)
    "<blink>#{text}</blink>"
  end
end

get '/foo/:who' do          # Sinatra::Application.get '/foo/:who'
  ...
end

# Sinatra::Application is the "default application"; all top-level calls are
# delegated there.