Showing indices for mesh vertices in Blender

When working with mesh geometry using the Blender Python API, it is often necessary to visually control which vertices are processed by scripts and which are not. Ordinary Blender users may also find it useful to be able to navigate the mesh's vertices by their numbers.

Read more: https://b3d.interplanety.org/en/showing-indices-for-mesh-vertices-in-blender/