Ignore that square characters in the XML content -- they represent newline characters.

忽略 XML 内容中的方形符号 —— 它们代表换行符。

youdao

In writing, make the characters square and upright.

字要写得方正。

《新英汉大辞典》

You can enclose one or more characters in square brackets to create a set; any character in the set will match.

可以使用方括号将一个或多个字符括起来，以创建一个集合，该集合中的任何字符都可以匹配。

youdao

An informal census by the Times Square Alliance, a business group, counted 52 costumed characters clustered in the plaza on Saturday evening.

WSJ: Street Characters Tread Fuzzy Legal Ground

Times Square is crawling with entrepreneurs who dress up as pop-culture characters and try to make a few bucks posing for photos with visitors to the big city.

NPR: Cookie Monster, Elmo Get In Times Square Trouble

But most exciting were the dozens of square clay tablets inscribed with letters which, if Neolithic, predated by many millennia the Phoenician characters from which Western alphabets were supposed to have come making Glozel, not the Middle East, the cradle of Western civilisation.

ECONOMIST: Emile Fradin