When we click the small green button, it turns red.  This means that the price is locked at some amount other than the calculated price from our tables.  Any price can be manually changed and locked.  It will stay locked through saving and recalling years later.  If we want to unlock it we just click the same button and it will turn green.

The yellow buttons are called the "HowsIt" buttons.  How does it get that price.  If we click the HowsIt button next to Press Price ..........

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