The View button toggles the display 3D modes. In Single mode only seen subset marked by the cursor (dotted line), Poly mode displays all marked subset. When clicking the Save button marked subset stored in the .mesh file. Read this too: https://www.vbforums.com/showthread.php?680924-Access-of-Speed-2-Race-Game Read this too: https://www.vbforums.com/showthread.php?605201-RESOLVED-Use-DX9-with-VB6!&daysprune=365 Thanks Mikle !