LoadCAD:

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   Load a 3D CAD file. Handles .dxf, .obj and .3DMF files. 
   If format is entered and file does not have a suffix (.dxf, .obj or
   .3DMF) it will be appended. For example, if you enter

   LoadCAD( 'myFile.dxf' )        or
   LoadCAD( 'myFile','','dxf' )

   LoadCAD will open myFile.dxf. If you want to scale the units of the
   model, for example from vertex units to inches, you can define the 
   factor using kScale.

   If you call the function with no outputs it will draw the model. If you
   call the function with no inputs you can select a file using the dialog
   box.

   If you want to use the model data in BuildCAD, pass the component
   vertex (v) and face (f) fields to a generic component.
      m = CreateComponent( 'make', 'generic', 'vertex', v, 'face', f ... )
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   Form:
   g = LoadCAD( file, path, format, kScale )
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   ------
   Inputs
   ------

   file        (1,:) Filename
   path        (1,:) Path to the file
   format      (1,:) Format 'dxf', 'obj', '3DMF'
   kScale      (1,1) Optional scale factor of the model

   -------
   Outputs
   -------
   g           (1,1) Data structure
                     .name       (1,:)  Model name
                     .component   (:)   Component structure
                     .radius     (1,1)

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Children:

Common: CAD/AutoCADColor
Common: CAD/BinaryToString
Common: CAD/GenericProperties
Common: CAD/IntToBinary
Common: General/DeBlankLT
Common: General/GetFileRoot
Common: General/GetFileSuffix
Common: General/IsValidField
Common: Graphics/NewFig
Common: Graphics/XLabelS
Common: Graphics/YLabelS
Common: Graphics/ZLabelS
Common: Math/Mag