XFDL forms can provide sophisticated error checking as the user fills out the form, preventing possible errors (and wasted time as incomplete or erroneous forms are returned to the sender).

在用户填写XFDL 表单时，表单能够提供复杂的错误检查，这样可以避免可能的错误（并避免由于将不完全或错误的表单返回给发送者而浪费时间）。