TrEd Extension: pdt_t_st
This extension can be installed directly from TrEd, using Setup >> Manage Extensions >> Get New Extensions; just make sure the repository http://ufal.mff.cuni.cz/~pajas/tred/extensions/ is enabled in Setup >> Manage Extensions >> Edit Repositories.
Copyright (c) 2010 by Pavel Straňák
This is a free software distributed under BSD licence.