HtmlGlobals.Pas
ThtStrings and ThtStringList are lists of ThtStrings.
Depending on the compiler switch UNICODE they are set to the lists of the available unicode string type.
If UNICODE is defined ThtStrings is set to TStrings otherwize to TWideStrings.
If UNICODE is defined ThtStringList is set to TStringList otherwize to TWideStringList.
Type ThtString is the string type uses in HtmlViewer code.