look at these routines:

void Swf2HtmlConverterCallback::PutString(const char *str)
{
}

void Swf2HtmlConverter::PrintLink(const char* str)
{
    if (m_dumpLinks && StringIsLink(str))
	{
		PutString("...");
		PrintString(str);
		PutString("\">");
        PrintString(str);
		PutString("</a>\n");
	}
}

void Swf2HtmlConverter::ParseDoAction(bool fPrintTag)
{
    for (;;) 
    {
        // Handle the action
        ......

        switch ( actionCode ) 
        {
            ......

            case sactionGetURL:
            {
                char *url = GetString();
                PrintLink(url);
                break;
            }
        }
    }
}