void usage()
{
    std::cerr << "Usage: " << whoami << " filename" << std::endl
	      << "Creates a simple PDF and writes it to filename" << std::endl;
    exit(2);
}
void usage()
{
    std::cerr << "Usage: " << whoami << " filename" << std::endl
	      << "Creates a simple PDF and writes it to filename" << std::endl;
    exit(2);
}