A zanox MasterTag is a set of 7 script containers which advertisers implement on their websites. These containers asynchronously load applications that provide value added services. For instance, advertisers could load retargeting or web analytics services into their MasterTags or use the MasterTags as generic container tags.
To take advantage of available services, advertisers need to integrate MasterTag and associated meta-data into their web pages. The documentation is available as PDF:
Developers can use MasterTag's generic interface to create applications for zanox advertisers. Documentation for developers is available in PDF: