anchor.diff:  
           let refName = node |> Yaml.getOptionalValue "ref" |> Yaml.toOptionalString
   
  -        let mesh,weightMode,attrs =
  +        let mesh,modType,weightMode,attrs =
               // TODO: should also support "modtype" here
               let sType = (node |> Yaml.getValue "meshtype" |> Yaml.toString).ToLower().Trim()
               let modType = getModType sType
  
positive.code: //        sw.StopAndPrint()
  
          let mesh = { mesh with BinaryVertexData = binVertData; Declaration = declData }
  
          MReference(
              { DBReference.Name = refName
  
negative.code:                             Tex3Path = node |> Yaml.getOptionalValue "Tex3Path" |> unpack
                      })
  
              mesh,modType,weightMode,attrs
  
          let md = { 
              DBMod.RefName = refName
  