1 files changed, 3 insertions, 0 deletions
diff --git a/include/qpdf/QPDFObjGen.hh b/include/qpdf/QPDFObjGen.hh
index 81c45d9f..9b61c78d 100644
--- a/include/qpdf/QPDFObjGen.hh
+++ b/include/qpdf/QPDFObjGen.hh
@@ -44,6 +44,9 @@ class QPDFObjGen
     int getGen() const;
 
   private:
+    // This class does not use the Members pattern to avoid a memory
+    // allocation for every one of these. A lot of these get created
+    // and destroyed.
     int obj;
     int gen;
 };