---------------------------------------------- Known classes and modules

     BLT, BLT::Barchart, BLT::Bitmap, BLT::Busy, BLT::Busy::Shield,
     BLT::Container, BLT::CutBuffer, BLT::DnD, BLT::DragDrop,
     BLT::DragDrop::DnD_Handle, BLT::DragDrop::PackageCommand,
     BLT::DragDrop::PackageCommand::ValidateArgs,
     BLT::DragDrop::SiteCommand,
     BLT::DragDrop::SiteCommand::ValidateArgs, BLT::DragDrop::Token,
     BLT::EPS, BLT::Graph, BLT::GraphCommand, BLT::Hiertable,
     BLT::Htext, BLT::PlotComponent, BLT::PlotComponent::Axis,
     BLT::PlotComponent::Bar, BLT::PlotComponent::BitmapMarker,
     BLT::PlotComponent::Crosshairs, BLT::PlotComponent::Element,
     BLT::PlotComponent::GridLine, BLT::PlotComponent::ImageMarker,
     BLT::PlotComponent::Legend, BLT::PlotComponent::Line,
     BLT::PlotComponent::LineMarker, BLT::PlotComponent::Marker,
     BLT::PlotComponent::OptKeys, BLT::PlotComponent::Pen,
     BLT::PlotComponent::PolygonMarker, BLT::PlotComponent::Postscript,
     BLT::PlotComponent::TextMarker, BLT::PlotComponent::WindowMarker,
     BLT::Printer, BLT::Spline, BLT::Stripchart, BLT::Table,
     BLT::Table::TableContainer, BLT::Tabnotebook, BLT::Tabset,
     BLT::Tabset::NamedTab, BLT::Tabset::Tab, BLT::Ted, BLT::Tile,
     BLT::Tile::Button, BLT::Tile::Checkbutton, BLT::Tile::Frame,
     BLT::Tile::Label, BLT::Tile::Radiobutton, BLT::Tile::Scrollbar,
     BLT::Tile::Toplevel, BLT::Tree, BLT::Tree::Node, BLT::Tree::Notify,
     BLT::Tree::Tag, BLT::Tree::Trace, BLT::Treeview,
     BLT::Treeview::ConfigMethod, BLT::Treeview::FindExecFlagValue,
     BLT::Treeview::FindExecFlagValue::ValidateArgs,
     BLT::Treeview::Node, BLT::Treeview::OpenCloseCommand,
     BLT::Treeview::OpenCloseCommand::ValidateArgs, BLT::Treeview::Tag,
     BLT::Treeview::TagOrID_Methods, BLT::Vector, BLT::VectorAccess,
     BLT::Watch, BLT::Winop, BWidget, BWidget::ArrowButton,
     BWidget::Bitmap, BWidget::Button, BWidget::ButtonBox,
     BWidget::ComboBox, BWidget::Dialog, BWidget::DragSite,
     BWidget::DropSite, BWidget::DynamicHelp, BWidget::Entry,
     BWidget::Label, BWidget::LabelEntry, BWidget::LabelFrame,
     BWidget::ListBox, BWidget::ListBox::Event_for_Items,
     BWidget::ListBox::Item, BWidget::MainFrame, BWidget::MessageDlg,
     BWidget::NoteBook, BWidget::NoteBook::Event_for_Tabs,
     BWidget::PagesManager, BWidget::PanedWindow, BWidget::PanelFrame,
     BWidget::PasswdDlg, BWidget::ProgressBar, BWidget::ProgressDlg,
     BWidget::ScrollView, BWidget::ScrollableFrame,
     BWidget::ScrolledWindow, BWidget::SelectColor, BWidget::SelectFont,
     BWidget::SelectFont::Dialog, BWidget::SelectFont::Toolbar,
     BWidget::Separator, BWidget::SpinBox, BWidget::StatusBar,
     BWidget::TitleFrame, BWidget::Tree, BWidget::Tree::Event_for_Items,
     BWidget::Tree::Node, BWidget::Widget, BinaryString, Clock,
     EncodedString, Encoding, HTML_Widget, HTML_Widget::ClippingWindow,
     ICONS, Img, Img::BMP, Img::GIF, Img::ICO, Img::JPEG, Img::PCX,
     Img::PIXMAP, Img::PNG, Img::PPM, Img::PS, Img::SGI, Img::SUN,
     Img::TGA, Img::TIFF, Img::WINDOW, Img::XBM, Img::XPM, Itcl,
     Itcl::ItclObject, ItemValidateConfigure, Itk, Itk::Archetype,
     Itk::Component, Itk::Toplevel, Itk::Widget, Iwidgets,
     Iwidgets::Buttonbox, Iwidgets::Calendar,
     Iwidgets::Calendar::CalendarCommand,
     Iwidgets::Calendar::CalendarCommand::ValidateArgs,
     Iwidgets::Canvasprintbox, Iwidgets::Canvasprintdialog,
     Iwidgets::Checkbox, Iwidgets::Combobox, Iwidgets::Dateentry,
     Iwidgets::Datefield, Iwidgets::Dialog, Iwidgets::Dialogshell,
     Iwidgets::Disjointlistbox, Iwidgets::Entryfield,
     Iwidgets::Entryfield::EntryfieldValidate,
     Iwidgets::Entryfield::EntryfieldValidate::ValidateArgs,
     Iwidgets::Extbutton, Iwidgets::Extfileselectionbox,
     Iwidgets::Extfileselectiondialog, Iwidgets::Feedback,
     Iwidgets::Fileselectionbox, Iwidgets::Fileselectiondialog,
     Iwidgets::Finddialog, Iwidgets::Hierarchy,
     Iwidgets::Hierarchy::IconCommand,
     Iwidgets::Hierarchy::IconCommand::ValidateArgs,
     Iwidgets::Hierarchy::IndicatorCommand,
     Iwidgets::Hierarchy::IndicatorCommand::ValidateArgs,
     Iwidgets::Hierarchy::QueryCommand,
     Iwidgets::Hierarchy::QueryCommand::ValidateArgs,
     Iwidgets::Hyperhelp, Iwidgets::Labeledframe,
     Iwidgets::Labeledwidget, Iwidgets::Mainwindow, Iwidgets::Menubar,
     Iwidgets::Messagebox, Iwidgets::Messagedialog, Iwidgets::Notebook,
     Iwidgets::Optionmenu, Iwidgets::Panedwindow,
     Iwidgets::Promptdialog, Iwidgets::Pushbutton, Iwidgets::Radiobox,
     Iwidgets::Scopedobject, Iwidgets::Scrolledcanvas,
     Iwidgets::Scrolledframe, Iwidgets::Scrolledhtml,
     Iwidgets::Scrolledlistbox, Iwidgets::Scrolledtext,
     Iwidgets::Scrolledwidget, Iwidgets::Selectionbox,
     Iwidgets::Selectiondialog, Iwidgets::Shell, Iwidgets::Spindate,
     Iwidgets::Spinint, Iwidgets::Spinner,
     Iwidgets::Spinner::EntryfieldValidate,
     Iwidgets::Spinner::EntryfieldValidate::ValidateArgs,
     Iwidgets::Spintime, Iwidgets::Tabnotebook, Iwidgets::Tabset,
     Iwidgets::Timeentry, Iwidgets::Timefield, Iwidgets::Toolbar,
     Iwidgets::Watch, OptionObj, ScrollFrame, Scrollable, TclX,
     TclX::XPG3_MsgCat, Tcllib, Tcllib::Autoscroll, Tcllib::CText,
     Tcllib::Cursor, Tcllib::Datefield, Tcllib::GetString_Dialog,
     Tcllib::History, Tcllib::ICO, Tcllib::IP_Entry, Tcllib::Plotchart,
     Tcllib::Plotchart::Barchart, Tcllib::Plotchart::ChartMethod,
     Tcllib::Plotchart::Gnattchart,
     Tcllib::Plotchart::HorizontalBarchart,
     Tcllib::Plotchart::IsometricPlot, Tcllib::Plotchart::Piechart,
     Tcllib::Plotchart::Plot3D, Tcllib::Plotchart::PlotSeries,
     Tcllib::Plotchart::PolarPlot, Tcllib::Plotchart::Stripchart,
     Tcllib::Plotchart::Timechart, Tcllib::Plotchart::XYPlot,
     Tcllib::Style, Tcllib::Swaplist_Dialog, Tcllib::Tablelist,
     Tcllib::TablelistItemConfig, Tcllib::Tkpiechart,
     Tcllib::Tkpiechart::BoxLabeler, Tcllib::Tkpiechart::ConfigMethod,
     Tcllib::Tkpiechart::Label, Tcllib::Tkpiechart::PeripheralLabeler,
     Tcllib::Tkpiechart::Pie, Tcllib::Tkpiechart::PieChartObj,
     Tcllib::Tkpiechart::Slice, Tcllib::Tooltip, Tcllib::Widget,
     Tcllib::Widget::Dialog, Tcllib::Widget::PanelFrame,
     Tcllib::Widget::Ruler, Tcllib::Widget::ScreenRuler,
     Tcllib::Widget::ScrolledWindow, Tcllib::Widget::SuperFrame, Tile,
     Tile::Dialog, Tile::Font, Tile::KeyNav, Tile::ParseStyleLayout,
     Tile::Style, Tile::TButton, Tile::TCheckButton, Tile::TCombobox,
     Tile::TEntry, Tile::TFrame, Tile::TLabel, Tile::TLabelframe,
     Tile::TMenubutton, Tile::TNotebook, Tile::TPaned, Tile::TProgress,
     Tile::TProgressbar, Tile::TRadioButton, Tile::TScale,
     Tile::TScrollbar, Tile::TSeparator, Tile::TSquare,
     Tile::TileWidget, Tile::Treeview, Tile::TreeviewConfig, TkDND,
     TkDND::DND, TkDND::DND_Subst, TkDND::Shape, TkTable,
     TkTable::BrowseCommand, TkTable::BrowseCommand::ValidateArgs,
     TkTable::CellCommand, TkTable::CellCommand::ValidateArgs,
     TkTable::CellTag, TkTable::ConfigMethod, TkTable::NamedCellTag,
     TkTable::SelectionCommand, TkTable::SelectionCommand::ValidateArgs,
     TkTable::ValidateCommand, TkTable::ValidateCommand::ValidateArgs,
     TkTrans, TreeCtrl, TreeCtrl::ConfigMethod, TreeCtrl::NotifyEvent,
     Trofs, UTF8_String, ValidateConfigure, Vu, Vu::Bargraph,
     Vu::ChartsConfig, Vu::Dial, Vu::NamedPieSlice, Vu::Pie,
     Vu::PieSlice, Vu::PieSliceConfigMethod, Vu::TkcBarchart,
     Vu::TkcSticker, Vu::TkcStripchart, Winico, Winico::Winico_callback,
     Winico::Winico_callback::ValidateArgs, Wm, X_Scrollable,
     Y_Scrollable