The QPX object is a request variable.
qpx对象是一个请求变量。
The control is bound to the request variable for input and output.
控件被绑定到输入和输出的请求变量。
Sitebricks will automatically bind a request variable of the same name to this.
Sitebricks会自动将同名的请求变量绑定到该参数。
Sitebricks will automatically bind a request variable of the same name to this.
Sitebricks会自动将同名的请求变量绑定到该参数。
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