The translations and overwriting text are provided in .asp files. These language files are named in the beginning of the global.asa file:
First, the main translation file:
<script LANGUAGE=VBScript RUNAT="SERVER" SRC="NxCommon\nxLang.asp"></script>
And then the overwriting file:
<script LANGUAGE=VBScript RUNAT="SERVER" SRC="NxCommon\nxLangOvewriteSSC.asp"></script>
Both files are located in the \WorkshopWeb\NxCommon folder.