Use of inputscope for Windows Phone development

Just as Javascript restrictions in web development, some texts only allow entering numbers, and some allow only entering email addresses. inputscope is used to facilitate the input of specific data content. Namevalue can be emailnameoraddress, chat, date, number, password, postcode, and so on.
Different types can be replaced based on namevalue.
Example:

<Textbox name = "mytextbox" width = "480" Height = "100" margin = "" verticalignment = "TOP" horizontalalignment = "Left"> <textbox. inputscope> <inputscopename namevalue = "emailnameoraddress"/> </inputscope> </textbox. inputscope> </textbox>