What is the push_back method used for in OpenGL?
<p>What is the purpose of the <code>push_back</code> method in OpenGL?  I was trying to understand a obj model loader program, specifically the following code:</p>

<pre><code>while(!in.eof())
{
    in.getline(buf,256);    //dosyanýn sonunda deðilken, coord vektörü
                            // için herþeyi okur. Bir string olarak okur.
    coord.push_back(new std::string(buf));
}
</code></pre>

<p>I have some ideas about <code>push_back</code> but I want to be sure.</p>
