DOC: todo for tomorrow (+)

include/lsgrmGraphOperations.txx

@@ -97,7 +97,7 @@ MergeAllGraphsAndAchieveSegmentation(
   //  // Write output graph to the output graph directory
   //  WriteGraph<TSegmenter>(segmenter.m_Graph, tmpDir, 0, 0);
   
-  // TODO: use std::sort to sort the graph before the polygon filling
+  // TODO: use std::sort to sort the graph (m_Id must be increasing) before the polygon filling
   typename TSegmenter::LabelImageType::SizeType outSize;
   outSize[0] = imageWidth;
   outSize[1] = imageHeight;