It's time for the demo of the new version of the interface. When the guys from Head-Ex arrive, you fire up the new program in IDLE:

Hesd-Ex Doll vertat


* Lam bridge. UK * StddHlhi, WA Description:


There's clearly something wrong with the prototype. There is only supposed to be one radio button selected at any one time, and yet the program shows all of the radio buttons selected together.

What happened? You need to look in a little more detail at how radio buttons actually work.

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