caret

A set that begins with a caret (^) matches any character not included in the set..以脱字符号 (^) 为开头的集合将匹配集合中不包括的所有字符。

When a DocumentCommand executes, it starts by updating the Position corresponding to the caret (the vertical bar cursor bar)..当执行 DocumentCommand 时，首先会更新与插入符号（垂直的光标条）相应的 Position。

Mode m: Make the caret (^) and dollar sign ($)match at the start and end of each line, for example, after and before line breaks embedded in the source string..模式 m：使插入符号 (^) 和美元符号 ($) 在每一行的开始和结尾相匹配，例如，在源字符串中嵌入前后换行符。