2.2.8 [HTML5:2014] Section 4.2.5.1 Standard metadata names

C0011: The title, not the application name, is used for UI in cases of page-created dialogs or tabs

The specification states:

 4.2.5.1 Standard metadata names
     ...
     application-name
         ...
         User agents may use the application name in UI in preference to the page's title, 
         since the title might include status messages and the like relevant to the status 
         of the page at a particular moment in time instead of just being the name of the 
         application.

IE11 Mode, IE10 Mode, IE9 Mode, IE8 Mode, IE7 Mode, and IE5 (Quirks) Mode (All versions)

The title, not the application name, is used for UI in cases of page-created dialogs or tabs.

C0085: The text "This site says..." is used for UI in cases of page-created dialogs

The specification states:

 4.2.5.1 Standard metadata names
     This specification defines a few names for the name attribute of the meta element.
     ...
     application-name
         ...
         User agents may use the application name in UI in preference to the page's title, 
         since the title might include status messages and the like relevant to the status 
         of the page at a particular moment in time instead of just being the name of the 
         application.

EdgeHTML Mode (Microsoft Edge)

The text "This site says..." is used for UI in cases of page-created dialogs.