{"type":"rich","version":"1.0","title":"VPG - 8 - priklad 8.5 a 8.6","html":"<iframe src=\"https://www.desmos.com/calculator/fykgt195kv?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}