Map Annotation ，自定义 地图标注类，适用于一般的地图开发。-Map Annotation, custom defined map annotation class, applicable in the general development of the map.

CoreTextLabel把HTML的特殊标注内容通过自定义的字体和颜色在标签上显示。也可以设定点击链接的时候的操作。 -With CoreTextLabel you are able draw NSAttributedString or HTML with custom font and color in iOS (>= 5.0) applications. numberOfLines and truncation (NSLineBreakByTruncatingTail) is