<cat>Dev.Model</cat> All the playermodels in Garry's Mod and other Source games have a specific skeleton organization. The Valve standard skeleton is named ValveBiped and all the bones have specific names and properties to be recognized as a Valve Biped model. Everything starts with a **ValveBiped.Bip01_Pelvis**, it will be the root bone of all the model's skeleton. Every other bone in the hierarchy should be parented directly or indirectly to this bone. ```markdown ValveBiped.Bip01_Pelvis ├──ValveBiped.Bip01_Spine │ └──ValveBiped.Bip01_Spine1 │ └──ValveBiped.Bip01_Spine2 │ └──ValveBiped.Bip01_Spine3 //(optional) │ └──ValveBiped.Bip01_Spine4 //(optional too, the clavicles can be attached to spine2) │ ├──ValveBiped.Bip01_L_Clavicle │ │ └──ValveBiped.Bip01_L_UpperArm │ │ └──ValveBiped.Bip01_L_Forearm │ │ └──ValveBiped.Bip01_L_Hand │ ├──ValveBiped.Bip01_R_Clavicle │ │ └──ValveBiped.Bip01_R_UpperArm │ │ └──ValveBiped.Bip01_R_Forearm │ │ └──ValveBiped.Bip01_R_Hand │ └──ValveBiped.Bip01_Neck1 │ └──ValveBiped.Bip01_Head ├──ValveBiped.Bip01_L_Thigh │ └──ValveBiped.Bip01_L_Calf │ └──ValveBiped.Bip01_L_Foot │ └──ValveBiped.Bip01_L_Toe1⤶ │ └──ValveBiped.Bip01_L_Toe0⤶ │ └──ValveBiped.Bip01_R_Thigh └──ValveBiped.Bip01_R_Calf └──ValveBiped.Bip01_R_Foot └──ValveBiped.Bip01_R_Toe1⤶ └──ValveBiped.Bip01_R_Toe0⤶ ```