[.net] unknown hlsl code snipped

Hi all. I try to make post-process on MDX. So, i find corresponding sample in "DirecX Sample Browser" and integrated it in our app. In some effect files of this sample i have found non understandable code snipped: ---------------------------- float2 TexelKernel[g_cKernelSize] < string ConvertPixelsToTexels = "PixelKernel"; >; ---------------------------- In sample app this code uses as: ---------------------------- hAnnotation = m_pEffect->GetAnnotationByName( hParamToConvert, "ConvertPixelsToTexels" ) ---------------------------- I tried to find explanation in MSDN but it was unseccess. If anyone can explane me what does it means, please do it..