Office of Communication and Translation Services. PRO-TOK. Our mission is to deliver world-class professional translation services that will enable our clients to engage in successful communication with their customers, users or stakeholders, and to drive sales, increase profits, and build positive brand recognition. Localization services. In addition, PRO–TOK will also build and maintain a customized list of terms created according to our clients' specific needs. This customized glossary will enable flexible use of high quality terminology, as well as consistency of use in localization efforts. In addition to keeping abreast of new terminology in the changing field of Information technology, we utilize Microsoft glossary which PRO-TOK helped create in 2002. when Microsoft started with localization processes here in Serbia. Pro-Tok has access to and utilizes Microsoft's localization database of all localized products to date (client and server applications), including Navision.