Each line consists of either a single sample of the xyz values of the 41 mocap points,
or the single field "Tn" or "Cn", where n is 0, 1 or 2.  Tn is a throw of ball n,
Cn is a catch of ball n.

Marker Locations
================

LFHD	Left front head
RFHD	Right front head
LBHD	Left back head
RBHD	Right back head

C7	Back of neck
T10	Upper back
CLAV    Clavicle
STRN	Sternum
RBAC	Right back offset marker

LSHO	Left shoulder
LUPA	Left upper arm
LELB	Left elbow
LFRM	Left forearm
LWRA	Left wrist bar thumb side
LWRB	Left wrist bar pinkie side
LFIN	Left hand

RSHO	Right shoulder
RUPA	Right upper arm
RELB	Right elbow
RFRM	Right forearm
RWRA	Right wrist bar thumb side
RWRB	Right wrist bar pinkie side
RFIN	Right hand

LFWT	Left front waist
RFWT	Right front waist
LBWT	Left back waist
RBWT	Right back waist

LTHI	Left thigh
LKNE	Left knee
LSHN	Left shin
LANK	Left ankle
LHEE	Left heel
LTOE	Left toe
LMT5	Left metatarsal five

RTHI	Right Thigh
RKNE	Right knee
RSHN	Right shin offset
RANK	Right ankle
RHEE	Right heel
RTOE	Right toe
RMT5	Right metatarsal five

Logical Parts
=============

Head = LFHD,RFHD,LBHD,RBHD
Root = C7,T10,CLAV,STRN,LSHO,RSHO,RBAC

LeftUpperArm = LSHO,LELB,LUPA
LeftLowerArm = LELB,LWRA,LWRB,LFRM
LeftHand = LWRA,LWRB,LFIN

RightUpperArm = RSHO,RELB,RUPA
RightLowerArm = RELB,RWRA,RWRB,RFRM
RightHand = RWRA,RWRB,RFIN

Pelvis = LFWT,RFWT,LBWT,RBWT

LeftUpperLeg = LFWT,LKNE,LTHI
LeftLowerLeg = LKNE,LANK,LSHN
LeftFoot = LANK,LHEE,LTOE,LMT5

RightUpperLeg = RBWT,RKNE,RTHI
RightLowerLeg = RKNE,RANK,RSHN
RightFoot = RANK,RHEE,RTOE,RMT5

Conceptual Hierarchy  (all points are in world coordinates, however)
====================
Head,Root
Root,LeftUpperArm
Root,RightUpperArm
LeftUpperArm,LeftLowerArm
RightUpperArm,RightLowerArm
Root,Pelvis
Pelvis,LeftUpperLeg
LeftUpperLeg,LeftLowerLeg
LeftLowerLeg,LeftFoot
Pelvis,RightUpperLeg
RightUpperLeg,RightLowerLeg
RightLowerLeg,RightFoot
LeftLowerArm,LeftHand
RightLowerArm,RightHand