Control displays each category record , and for each record , it also displays , in a bulleted list , the products that belong to that category “ datalist ”控件显示了每条类别记录，并且还针对每条记录在项目符号列表中显示了属于该类别的产品。
Make your document easy on the eyes by using plenty of white space , ample margins , headings and subheadings , and bulleted lists of key information 通过使用大量的白色空间，足够的页边距，标题和子标题，关键信息的列表让你的文档读起来舒服。
However , if you want to use a custom image to convey a concept to the user , you should add additional text to each of the bulleted list items or use a control that allows you to specify alternate text for each image 但是，若要使用自定义图像向用户传达某个概念，则应该向每个项目符号列表项添加附加文本或使用可以为每个图像指定备用文本的控件。
