Characters (unordered) to display any combination of numbers and uppercase and lowercase letters you enter, for example, Arch1, Const1, and Insp1 for the first three summary tasks in the project.

• 字符(无序),用于显示您输入的数字和大小写字母的任意组合,如Arch1、Const1和Insp1表示项目中的前三个摘要任务。