Hello, I’m new to Blender and after researching this topic a lot, still can’t find the answer I’m looking for. Blender has vertex indices, but the rest of the vertex data (like uvs, colors) seems to be accessed only per face (i.e. the so called loops). However, this tells nothing about the actual topology of the uv layout, i.e. which vertices are shared and create uv islands. Some exporters manually create uv indices via a hash. If we ignore the fact that this is probably quite slow in Python, I’m not sure if it’s even correct. I can see that Blender has commands to weld UV vertices and detect uv islands, so it should have topology information, right? Or it’s managed internally via similar hash for detect duplicated uvs? I.e., if I weld two uv vertices, is there any way to see this in the data, except manually compare the uv values?