- glBegin(GL_QUADS);     // Start Drawing Quads
 -  glVertex3f(-1.0f, 1.0f, 0.0f);   // Left And Up 1 Unit (Top Left)
 -  glVertex3f( 1.0f, 1.0f, 0.0f);   // Right And Up 1 Unit (Top Right)
 -  glVertex3f( 1.0f,-1.0f, 0.0f);   // Right And Down One Unit (Bottom Right)
 -  glVertex3f(-1.0f,-1.0f, 0.0f);   // Left And Down One Unit (Bottom Left)
 - glEnd();      // Done Drawing A Quad
 
