: While originally designed for earlier versions, many users utilize v1.01 for 3ds Max 2020 . Note that 3ds Max 2020 is exclusively a 64-bit (x64) application; it does not support 32-bit (x32) systems [3].

: Typically, the setup involves placing the .dlm plugin file into your 3ds Max Plugins folder.

If you were actually looking for a research paper on subdivision surfaces (the technology behind TurboSmooth), you might be interested in the Catmull-Clark subdivision method, which is the industry standard for this type of modeling.

: If you are looking for a "setup key," it is important to note that this plugin is a commercial product. You should obtain a legitimate license through authorized developers or marketplaces like Mariusz Szerstobitow (the original creator) to ensure stability and compatibility with newer Max versions.

: You are looking for a guide on how to set up the plugin or find a "setup key."

TurboSmooth Pro is a 3ds Max modifier that enhances the standard TurboSmooth. Unlike the default version, it allows for based on edge weights or smoothing groups, giving you more control over your geometry without adding extra edge loops [1, 2]. Compatibility & Installation

However, the phrasing of your request is a bit ambiguous. It could mean one of two things: