But as I want to work with mesh I want to know which command the person used in the mesh workbench. Also, there is may a need for some modification, manipulation, and changes on the meshes, and turning the modified object into sub D may have an unwanted result.
They used to SubD on a quad mesh. You can work in box mode of SubD by hitting the tab key and making your mods and changes there, just like you would if you were working on a an unconverted quad based mesh.
Oh yes. You did mean toggling the rough view into a smooth view in subD. I supposed the box mode of sub D is something in the mesh unit, and I can switch sub D to mesh again.
just in case you are still looking for the initial thing, i believe the Weaverbird plugin was used, which is available for grasshopper and Rhino itself.
I read the article partially. But it just works in Rhino 4 and 5 and I don’t know is there any new version of the plugin? I have to go to Food 4 Rhino and observe the newest information about the plugin.