Usage:
vtk_init level
Description:
This procedure is used, for example, in vovconsole. This procedure is used by scripts that want to use some of the GUI dialogs. The procedure initialize the TCL, TK, and TIX packages. The argument level has to be one of "tcl", "tk", "tix" or "all". Each level implies all the preceding levels.
The procedure can be called multiple times. The argument "tcl" does nothing because TCL is always initialized. The typical value for level is "all" and is used by scripts that want to pop up a dialog.
Examples:
vtk_init all
Returns:
Nothing