The addition of form elements to HTML (FORM) did little more than create a new way to implement thin-client block-mode applications in the style of the venerable 3270 terminal.
向 HTML 中增加表单元素（即 FORM ）无非就是创建了一种新的方法，以仿照古老的 3270 终端风格实现瘦客户机块模式（block-mode）应用程序。
2
The terminal sliding mode controller is designed by using unit vector style, and it suits the uncertain elements whether it satisfies the matching condition or not.