On a field-by-field basis, the XForms processor checks the instance data against its constraints.
XForms处理器根据实例数据的约束逐个字段地对其进行检查。
The XForms processor evaluates and enforces these constraints without the need for additional code.
X Forms处理器无需额外代码即可计算并强制这些约束。
When the functions attribute is present on the model, the XForms processor reads it before loading the form.
当 model 元素中含有functions属性时，XForms处理器会在加载表单之前读取该属性。
The <xf:submission> element allows several optional attributes to help control the XML created out of the data model instance by the XForms processor
<xf:submission>元素支持几种可选的属性来帮助控制XForms 处理程序从数据模型实例生成的XML
If, on the other hand, the value is set to "false", then the relevant property is no longer true, which is the signal to the XForms processor to hide the component.
另一方面，如果值设置为“false ”，那么relevant属性就不再是true,X Forms处理器将隐藏组件。
If you reuse the already installed XForms processor on users' devices, such as personal computers and personal digital assistants (PDAs), you can use another form to modify the original form.
如果能够重用用户设备如个人计算机或个人数字助理(PDA)上已经安装的XForms处理程序，就可以使用另一个表单来修改原来的表单。
XPath is an excellent complementary technology for XForms on both the client and the server; once you've mastered XPath, you can use it in your forms, and in the form processor.
无论在客户机还是服务器上，对XForms来说XPath都是一种很好的辅助技术；一旦掌握了XPath，就可以在表单和表单处理程序中使用它。
XPath is an excellent complementary technology for XForms on both the client and the server; once you've mastered XPath, you can use it in your forms, and in the form processor.
无论在客户机还是服务器上，对XForms来说XPath都是一种很好的辅助技术；一旦掌握了XPath，就可以在表单和表单处理程序中使用它。
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