This loop will create 26 documents, one for each lowercase letter of the alphabet, each document containing the character itself and its ASCII character code.
此循环将创建26个文档，代表字母表的每个小写字母，每个文档包含字符本身及其ASCII字符码。
2
The unique case-mapping rules for the Turkish alphabet illustrate how uppercase and lowercase mappings differ from language to language even when they use most of the same letters.