| button-select | top level widget to select by buttons |
| entry-select | prompt user for value and return entered value |
| listbox-select | list lines and return selected list entry |
| check-select | select items from checkbox table |
| entrytable-select | select by table of label entry boxes |
| radio-select | select one item from radiobutton table |
| file-select | browse directory and return selected file name |
| message-box | top level widget to print error messages, etc. |
| entry-emacs-bindings | emacs-like bindings for window list |
| FrameNotebook | class for tab notebook with frames |
| TextWindow | Text window for interactive session |
| Fiddler | 1-, 2-, 3-D plotting and drawing class |
| DataPlot | class to plot y vector(s) versus x (based on data:plot). |
| Plotter | function plotting class |