editor like a PSPad , Notepad++ etc... New translation : Copy WUG-language-en.php (located in languages dir) to new filename with suffix of yor language ( ISO 639-1 ). Eg for german copy "WUG-language-en.php" to "WUG-language- de .php". Then translate new created file, copy it to yor website, run http:// yourwebsite.com /wxwugraphs/WUG-test.php and