Specifies whether this XData block is internal (not displayed in the class documentation). Note that the class documentation does not currently display XData at all.

To specify that this XData block is internal, use the following syntax:

XData name [ Internal ] 
{
}

Otherwise, omit this keyword or place the word Not immediately before the keyword.

Internal class members are not displayed in the class documentation. This keyword is useful if you want users to see a class but not see all its members.

Note that the class documentation does not currently display XData blocks at all.