Fix the error of the dynamics color expression translator Add vendor 3mf 3D graphic model reader, which is avaliable in Microsoft.VisualBasic.Imaging.Drawing3D.Landscape.dll Improvements on the 3D graphics control for winform fix the math expression stack for the math function invokes Add R language like optional parameter scripting language feature, you can apply this new feature using Microsoft.VisualBasic.Mathematical.Scripting.ParameterExpression.Apply(System.Linq.Expressions.Expression(Of System.Func(Of Object()))) in dll module: Microsoft.VisualBasic.Mathematical.dll csv file namespace renamed to Microsoft.VisualBasic.Data.csv.IO Move math expression types to namespace Microsoft.VisualBasic.Mathematical.Scripting Add string interpolation extensions in the parameter expression Great improvements on the 3D graphics engine, which is avaliable in Microsoft.VisualBasic.Imaging.Drawing3D namespace Details about how to implements the parameter expression, read on this codeproject article: https://www.codeproject.com/Articles/1167903/Optional-Parameter-Expression-in-VisualBasic