alphanumeric field

基本解释

The field is required, has a max length of 40 characters, and accepts alphanumeric values only.
该属性是必需的，最大长度是40个字符，而且只接受字母数字。
Conversely, a simple text field can accept any alphanumeric data a user keys into it. This open-ended entry idiom is an example of an unbounded entry control.
在无界文本输入字段出现的场合，尽管该字段可能接收任何形式的输入，但还是很有必要为使用者构建一个“有效的”输入。
Consider this from the car example: Suppose that there is a text field called VIN that stores an alphanumeric value in the Domino document. The exported DXL representation of this field is
可以通过汽车例子来思考这个问题：假设有一个名为 VIN 的文本字段，它存储 Domino 文档中的字母数字值。