一个封装好的类（RichText Builder (StringBuilder for RTF)．可以将Rich Text控件中的内容直接保存为ＲＴＦ格式文件．,A good type of package (RichText Builder (StringBuilder for RTF). Could be in the Rich Text content controls directly saved as RTF files.

一个richedit封装类，用于自定义输出字体、颜色等修改，很实用-A richedit wrapper class used to customize the output of fonts, colors and other changes, it is practical!!!