Internal vegdata functions.
These are not intended to be called directly by the user.
tv.home tries to guess the default tv_home directory ('C:\Turbowin' or 'C:\Programme\Turbowin' or 'O:\Turbowin' on Windows systems and '~/.wine/drive_c/Turbowin' on Unix systems.
As dBase is an old DOS format, Umlaute have been stored in Turboveg using the CP437 code table. This has been changed and Turboveg seems to use a country specific code page now. Change options('tv.iconv') if you run into problems