XML Commenting:
 
Visual Basic provides an easy way to automatically create XML documentation for projects.
You can automatically generate an XML skeleton for your types and members,
and then provide summaries, descriptive documentation for each parameter,
and other remarks. The XML documentation is automatically emitted into an XML file
with the same name as your project and the .xml extension.

This file can be consumed or otherwise manipulated as XML.
This file is located in the same directory as the output .exe or .dll file of your project.

 To create XML documentation for a type or member

  1. In the Code Editor, position your cursor on the line above the type or member for which you want to create documentation.

  2. Type ''' (three single-quote marks).

    An XML skeleton for the type or member is added in the Code Editor.

  3. Add descriptive information between the appropriate tags.

    Note:
    If you add additional lines within the XML documentation block, each line must begin with '''.
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