Does mujoco-py support access to MuJoCo's text rendering functions?

[Random-Word]

For instance the C++ allows rendering text using something like this:

    // no model: empty screen
    if( !m )
    {
	mjr_rectangle(1, rect, 0, 0, rect.width, rect.height, 
		0.2, 0.3, 0.4, 1);
        mjr_overlay(rect, mjGRID_TOPLEFT, 0, "Drag-and-drop model file here", 0, &con);
        gui_mutex.unlock();
        return;
    }

So I attempted to recreate that by adding the following to my step function:

mjrect = mjcore.MJRRECT(0, 0, 10, 10)
mjlib.mjr_overlay(mjrect, 0, 0, "Some Test Text", 0, self._get_viewer().con)

No text is displayed, but there are a lot of reasons that might be so. Is use of the mjr_overlay supported in this way? I noticed it was commented out.