it means what it is

Target Dummy (im not calling it by its true name), does what it says on the tin very well. It adds a well made dummy that shows damage numbers and has some jiggle physics thats useful for testing out weapons.

However, on every server with this mod installed (that ive played) i havent seen anyone ever use this mod. Its very good for singleplayer creative testing but i would not recommend installing this for your players to use.