A typesafe abstraction and container for parameters to a requested page. Page
parameters in HTTP are query string values in the request URL. In other
protocols, the parameters to a page might come from some other source.
Pages which take a PageParameters object as an argument to their constructor
can be accessed directly from a URL and are known as "bookmarkable" pages
since the URL is stable across sessions and can be stored in a browser's
bookmark database.
Pages which take a PageParameters object as an argument to their constructor can be accessed directly from a URL and are known as "bookmarkable" pages since the URL is stable across sessions and can be stored in a browser's bookmark database.