Section 7.1. "Widgets and Gadgets and GUIs, Oh My!"
Section 7.2. Configuring Widget Appearance
Section 7.3. Toplevel Windows
Section 7.4. Dialogs
Section 7.5. Binding Events
Section 7.6. Message and Entry
Section 7.7. Checkbutton, Radiobutton, and Scale
Section 7.8. Running GUI Code Three Ways
Section 7.9. Images
