diff --git a/IOPool/Output/src/PoolOutputModule.cc b/IOPool/Output/src/PoolOutputModule.cc index 450040f351432..ccfd731b94136 100644 --- a/IOPool/Output/src/PoolOutputModule.cc +++ b/IOPool/Output/src/PoolOutputModule.cc @@ -476,7 +476,7 @@ namespace edm { "Set ROOT auto flush stored data size (in bytes) for event TTree. The value sets how large the compressed " "buffer is allowed to get. The uncompressed buffer can be quite a bit larger than this depending on the " "average compression ratio. The value of -1 just uses ROOT's default value. The value of 0 turns off this " - "feature."); + "feature. A value of -N changes the behavior to flush after every Nth event."); desc.addUntracked<int>("splitLevel", 99)->setComment("Default ROOT branch split level in output file."); desc.addUntracked<std::string>("sortBaskets", std::string("sortbasketsbyoffset")) ->setComment(