Frontend API
The frontend offers a range of JavaScript functions via which the program can control the Viewer if it is embedded into another web application via an iFrame. This allows the signing process to be started or the file to be saved, for example. In addition, the surrounding application can be informed of certain events and respond to these.
The special feature of an iFrame integration is that the surrounding application can be blocked and that it retains control until the work in signoSign/Universal has been completed.