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Provides a shortcode/function to render a countdown timer of the form "Years until target: X, Months until target: Y, Days until target: Z...". You can specify the date/time of the target, as well as output formats with placeholders (including HTML wrappers) all from within the admin options page. Display result using the shortcode; you can override global options from within the shortcode too. By default, result will be something like "Months 0/Days 0/Years 0; Hours 4:Minutes 59:Seconds 54".