Can somebody please explain:

drawTexturedModelRect(...)

I am stumped while making a GUI, and I'd appreciate the help.

    GL11.glBindTexture(GL11.GL_TEXTURE_2D, mc.renderEngine.getTexture(imgFile));
    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    drawTexturedModalRect(screen.xPosition, screen.yPosition, icon.x, icon.y, sizeX, sizeY);

    //Extra Info for you
    drawHorizontalLine (x-start, x-stop, y, color);
    drawVerticalLine(x, y-start, y-stop, color);
    drawRect(x-start, y-start, x-stop, y-stop, color);
    drawGradientRect(x-start, y-start, x-stop, y-stop, color-top, color-bottom);
    drawCenteredString(fontRenderer, text, x, y, color);
    drawString(fontRenderer, text, x, y, color);

    color = 0xAARRGGBB

    GL11.glBindTexture(GL11.GL_TEXTURE_2D, mc.renderEngine.getTexture(imgFile));
    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    drawTexturedModalRect(screen.xPosition, screen.yPosition, icon.x, icon.y, sizeX, sizeY);

    //Extra Info for you
    drawHorizontalLine (x-start, x-stop, y, color);
    drawVerticalLine(x, y-start, y-stop, color);
    drawRect(x-start, y-start, x-stop, y-stop, color);
    drawGradientRect(x-start, y-start, x-stop, y-stop, color-top, color-bottom);
    drawCenteredString(fontRenderer, text, x, y, color);
    drawString(fontRenderer, text, x, y, color);

    color = 0xAARRGGBB

Oh. Thanks!