Hello, I am starting with macros, so far I recorded the extrusion of a circle, however there is some things that I don't understand, I would like to know: Where can I find the reasons of this? To make myself clear, why do I have to use all those arguments then I am selecting a Plane, I understand that "Front Plane" is the name, "Plane" is the property, 0,0,0 is the location but what are the False, 0, Nothing, 0 about? Where can I read about it? I guess I am not able to use the API help the way I am suppose. Here is the macro

Dim swApp As Object

Dim Part As Object
Dim boolstatus As Boolean
Dim longstatus As Long, longwarnings As Long

Sub main()

Set swApp = _
Application.SldWorks

Set Part = swApp.ActiveDoc
boolstatus = Part.Extension.SelectByID2("Front Plane", "PLANE", 0, 0, 0, False, 0, Nothing, 0)
Part.SketchManager.InsertSketch True
Part.ClearSelection2 True
Dim skSegment As Object
Set skSegment = Part.SketchManager.CreateCircle(0#, 0#, 0#, 0.046557, 0.062358, 0#)
Part.ClearSelection2 True
boolstatus = Part.Extension.SelectByID2("Arc1", "SKETCHSEGMENT", 6.01007071343555E-02, 5.10714929169876E-02, 0, False, 0, Nothing, 0)
Dim myDisplayDim As Object
Set myDisplayDim = Part.AddDimension2(0.117379784825784, -1.69297766575649E-03, 0)
Part.ClearSelection2 True
Dim myDimension As Object
Set myDimension = Part.Parameter("D1@Sketch1")
myDimension.SystemValue = 0.127
Part.SetPickMode
Part.ClearSelection2 True
Set skSegment = Part.SketchManager.CreateCircle(0#, 0#, 0#, 0.01934, 0.032233, 0#)
Part.ClearSelection2 True
boolstatus = Part.Extension.SelectByID2("Arc2", "SKETCHSEGMENT", 1.24328929866614E-02, 0.034305575092825, 0, False, 0, Nothing, 0)
Set myDisplayDim = Part.AddDimension2(7.96626106182378E-02, -1.15119379506123E-03, 0)
Part.ClearSelection2 True
Set myDimension = Part.Parameter("D2@Sketch1")
myDimension.SystemValue = 0.0762
Part.SetPickMode
Part.ClearSelection2 True
Part.SketchManager.InsertSketch True
Part.ShowNamedView2 "*Trimetric", 8
Part.ClearSelection2 True
boolstatus = Part.Extension.SelectByID2("Sketch1", "SKETCH", 0, 0, 0, False, 4, Nothing, 0)
Dim myFeature As Object
Set myFeature = Part.FeatureManager.FeatureExtrusion2(True, False, False, 6, 0, 0.508, 0.00254, False, False, False, False, 1.74532925199433E-02, 1.74532925199433E-02, False, False, False, False, True, True, True, 0, 0, False)
Part.SelectionManager.EnableContourSelection = False
Part.ClearSelection2 True
Part.SetPickMode
End Sub