The following Maya type ids have been reserved for use by Epic Games
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0x00102998	shaveVertexShader
0x00102999  shaveSubNode
0x0010299A-0x001029A1 ???
0x001029A2	shaveVolumeShader
0x001029A3	shaveBackgroundShader
0x001029A4	shaveMRHairGeom
0x001029A5	shaveMRHairIllum
0x001029A6	shaveMRRenderer / shaveMRVertexIllum
0x001029A7	shaveMRHairComp
0x001029A8	???
0x001029A9	shaveMRHairShadows / shaveMRHairShadowsVE
0x001029AA	shaveMRHairGeomDRA
0x001029AB	shaveMRRenderComp
0x001029AC-0x001029AD	???
0x001029AE	shaveMRSatData
0x001029AF-0x001029B2	???
0x001029B3	shaveMRShadowMatte
0x001029B4	shaveMRGeomPasser
0x001029B5	shaveMRInstanceGeom
0x001029B6	???
0x001029B7	shaveHairShape
0x001029B8	shaveBrushManip
0x001029B9	shaveVrayNode
0x001029BA-0x001029BB	???
0x001029BC	shaveShadowFilter
0x001029BD	LBrushNode
0x001029BE	LBrushBlindData
0x001029BF	LBrushToolLocator
0x001029C0	LBrushStencilLocator
0x001029C1	LBrushSurfaceShape
0x001029C2	LBrushSurfaceCallback
0x001029C3	LBrushStencilCallback
0x001029C4	LBrushRefImageCallback
0x001029C5	LBrushRefImageLocator
0x001029C6	LBrushNeutral
0x001029C7	LBrushNeutralBlindData
0x001029C8	LBrushNode2
0x001029C9	LBrushHelper
0x001029CA	shaveMRHairOpacity
0x001029CB	shaveBlower
0x001029CD	shaveBlowerMgr
0x001029CE	shaveBlowerData

0x00106500 	shaveNode
0x00106501	shaveGlobals
0x00106502	shaveShadowNode


The following type ids are invalid
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Duplicates:

0x001029C0	LBrushSurfaceData


From the 0-7FFFF range reserved for internal plugins:

0x00070031	LBrushHwShadowed


From the 0x80000 - 0xFFFFF range reserved for the Maya devkit:

0x00083001	shaveBlindData