also variable syntax like this
var tagToChunk = {
//"VERS": [VersionChunk, "versionChunk"],
"MODL": [ModelChunk, "modelChunk"],
"SEQS": [SequenceChunk, "sequenceChunk"],
"GLBS": [GlobalSequenceChunk, "globalSequenceChunk"],
"TEXS": [TextureChunk, "textureChunk"],
//"SNDS": [SoundTrackChunk, "soundTrackChunk"],
"MTLS": [MaterialChunk, "materialChunk"],
"TXAN": [TextureAnimationChunk, "textureAnimationChunk"],
"GEOS": [GeosetChunk, "geosetChunk"],
"GEOA": [GeosetAnimationChunk, "geosetAnimationChunk"],
"BONE": [BoneChunk, "boneChunk"],
"LITE": [LightChunk, "lightChunk"],
"HELP": [HelperChunk, "helperChunk"],
//"ATCH": [AttachmentChunk, "attachmentChunk"],
"PIVT": [PivotPointChunk, "pivotPointChunk"],
"PREM": [ParticleEmitterChunk, "particleEmitterChunk"],
"PRE2": [ParticleEmitter2Chunk, "particleEmitter2Chunk"],
"RIBB": [RibbonEmitterChunk, "ribbonEmitterChunk"],
//"EVTS": [EventObjectChunk, "eventObjectChunk"],
"CAMS": [CameraChunk, "cameraChunk"],
"CLID": [CollisionShapeChunk, "collisionShapeChunk"]
};