The information in this article applies to:
When I enter a value in a specification dialog, the number is entered correctly but when the cursor moves to a different field, the value reverts to the previous one; why is this happening?
In many specification dialogs, you will see a "(D)" next to a number or a Default check box. The (D) indicates a Default value and, when present, tells Home Designer that it should use the default value instead of the value you entered.
"You entered __(D). The (D) indicates that you want to use the default value for this setting. if this is not what you want, please enter the number again, without the (D)."
Some dialogs will have a Default checkbox, rather than a "(D)" value; these function the same in that they force Home Designer to use the default value.