use Tie::Autotie 'Tie::IxHash';
tie my %linked_dsc, 'Tie::IxHash';

##</code><code>##

Main
  Name = Countries
End

Sub
  Action = Find: NA
  Text = North America
End

Sub
  Action = Find: EU
  Text = Europe
End
---
Main
  Name = EU
End

Sub
  Action = 
  Text = France
End

Sub
  Action = 
  Text = Italy
End
---
Main
  Name = US
End

Sub
  Action = 
  Text = Boston
End

Sub
  Action = 
  Text = Atlanta
End

---
Main
  Name = NA
End

Sub
  Action = Find: US
  Text = United States
End

Sub
  Action = Find: CA
  Text = Canada
End

Sub
  Action = Find: MX
  Text = Mexico
End
---