text: # API Constants
  SF_API_BASE = 'https://api.stockfighter.io/ob/api'
  SF_AUTH_HEADER_KEY = 'X-Starfighter-Authorization'
  
  # Test values
  TEST_EXCHANGE = 'TESTEX'
  TEST_STOCK = 'FOOBAR'
  TEST_ACCOUNT = 'EXB123456'
  
  # Order Types
  MARKET_ORDER = 'market'  # buys stock at any price
  LIMIT_ORDER = 'limit'  # shares are bought for at most specified price (vice versa for sell)
  FILL_OR_KILL_ORDER = 'fill-or-kill'  # get exactly as many shares as you asked for or none
  IMMEDIATE_OR_CANCEL = 'immediate-or-cancel'  # like fok but you could get <= specified ammount
  