VerticalWrapMode 垂直循环模式

Wrapping modes for text that reaches the vertical boundary.

延伸到垂直边界的文本的围绕模式。

Truncate	Text will be clipped when reaching the vertical boundary. 到达垂直边界时文本将被剪切。
Overflow	Text well continue to generate when reaching vertical boundary. 当达到垂直边界时继续产生。