<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. ⤶ Upper body bones structure⤶ ```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_R_Thigh⤶ └──ValveBiped.Bip01_R_Calf⤶ └──ValveBiped.Bip01_R_Foot⤶ └──ValveBiped.Bip01_R_Toe1⤶ ```