Data Type: Boolean string
All Web sites have a default page that is displayed when you first access the site. This page, often called the home page, is usually named index.htm or default.htm, although it can be any page set up as the default by the Web administrator.
The validateWelcomeNames parameter is used with methods such as list documents or put web struct to return meta-information for the file. true to request whether each item in the list of links for a file is a link to a default page, and if so, whether the default page exists. If false, no checking for default names is done.