 | Contents | Index |
| ICursor | Editor Entry HTk ICursor |
| Icon | HTk Icon |
| IconBar | IconBar |
| Image | HTk Image |
| ImageItem | HTk ImageItem |
| IndexModifier | Editor HTk |
| IndexModifiers | Editor HTk |
| Indicator | Indicator |
| InputField | InputForm InputWin |
| InputForm | InputForm InputWin |
| InputWin | InputWin |
| Item | GenGUI |