The case first attribute controls whether upper case characters collate before or after lower case characters, in the absence of other differences in the two text strings. 大小写优先属性控制在两个文本字符串中没有其他差异的情况下,大写字符排列在小写字符前面还是后面。
Small letters are sometimes called lower case and large letters upper case. Mixing: Having more than one typeface, style or size in one line of text. 字体混合:在一字行内,有多过一种字体、字款和字大小的情况。