pgtclsh is an example of a tclsh extended with the new Tcl
commands provided by the libpgtcl library.  By using pgtclsh, one can
write front-end applications to Postgres95 in Tcl without having to
deal with any libpq programming at all.  

The pgtclsh is an enhanced version of tclsh.  A similar enhancement
can easily be made to wish so that Tcl/Tk programs can use the
libpgtcl commands.  

If you have any questions or bug reports, please send them to
Jolly Chen at jolly@cs.berkeley.edu.