Since this simple demo application does not display the description of an event in the calendar views, I do not need to include it in the XML.
既然该样本演示应用不在日历视图中显示活动描述，所以不需要在XML中包括它。
Description: a calendar is dynamic object that can be represented as a dynamic XML document that contains month and day tags.
描述：日历是动态对象，它可以表示为包含month和day标记的一个动态xml文档。
Mark Twain, writing in Puddin-head Wilson's Calendar, gives a cogent description of how to break a habitual pattern such as approval-seeking.
马克·吐温的《傻瓜威尔逊》一书中，恰如其分的描述了如何摆脱像寻求赞许这一习惯。
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