You'll see a black triangle in the center of the bar below the preview, and there are now two white midpoint triangles on either side of the new central marker.
Ị ga-ahụ triangle na-acha odo odo n'etiti etiti mmanya ahụ n'okpuru nlele ahụ, ma ugbu a, triangles abụọ na-acha ọcha dị n'akụkụ ọ bụla nke akara akara ọhụrụ.