In this video: Adjustments to the GUI design.
Increasing the width of the Toykinter Combobox dropdown; preliminary troubleshooting of this attempt.
A complex hack created as a workaround for a deficiency of the Toykinter Combobox code.
The difference between Tkinter's `grid_forget()` and `grid_remove()` methods.
Trying to make a spacer (with the wrong kind of widget; will be corrected in a later video).
Trying to make a spacer with pad-and-hack (will be corrected in a later video).
