[Deprecated] Use HDInterviewOptions.OnInit instead. This function is called before HotDocs builds the interview. You can use this function to perform any interview preprocessing, such as adding custom buttons to the interview toolbar or registering for interview events.

var PreHDRender

function PreHDRender()
{
    HDSetButtonVisibility("HDNextUnans", false);
    HDSetButtonVisibility("HDPrevUnans", false);
    HDAddCustomToolbarButton(HelloWorld, "http://servername/images/btn.png");
}

function HelloWorld()
{
    // do something useful here
}