Here is a list of all documented variables with links to the class documentation for each member:

m_appendedPolygonHandle : WhiteBox::Api::AppendedPolygonHandles
m_bodyType : WhiteBox::WhiteBoxColliderConfiguration
m_closestPolygonWithHandle : WhiteBox::PolygonIntersection
m_fillColor : WhiteBox::ManipulatorViewPolygon
m_intersection : WhiteBox::PolygonIntersection
m_localIntersectionPoint : WhiteBox::Intersection
m_outlineColor : WhiteBox::ManipulatorViewPolygon
m_pickedFaceHandle : WhiteBox::PolygonIntersection
m_relativeAssetPath : WhiteBox::WhiteBoxSaveResult
m_restoredPolygonHandles : WhiteBox::Api::AppendedPolygonHandles
m_tint : WhiteBox::WhiteBoxMaterial
m_useTexture : WhiteBox::WhiteBoxMaterial
m_vertexStartEndHidden : WhiteBox::ManipulatorViewEdge
m_visible : WhiteBox::WhiteBoxMaterial
m_whiteBoxEdgeRenderData : WhiteBox::IntersectionAndRenderData
m_whiteBoxIntersectionData : WhiteBox::IntersectionAndRenderData
m_whiteBoxMeshAddress : WhiteBox::WhiteBoxMeshHandle