id-1.8.9.15.3.1.1.3" class="indexterm"></a>
      </span> <a href="#GUC-PLTCL-START-PROC" class="id_link">#</a></dt><dd><p>
        This parameter, if set to a nonempty string, specifies the name
        (possibly schema-qualified) of a parameterless PL/Tcl function that
        is to be executed whenever a new Tcl interpreter is created for
        PL/Tcl.  Such a function can perform per-session initialization, such
        as loading additional Tcl code.  A new Tcl interpreter is created
        when a P