diff --git a/src/foam/primitives/random/Random.H b/src/foam/primitives/random/Random.H
index f7f907d63..383f6ecea 100644
--- a/src/foam/primitives/random/Random.H
+++ b/src/foam/primitives/random/Random.H
@@ -53,12 +53,12 @@ class Random
 {
     // Private data
 
+        //- Seed for random numbers
         label Seed;
 
 
 public:
 
-
     // Constructors
 
         //- Construct given seed
@@ -67,22 +67,30 @@ public:
 
     // Member functions
 
+        //- Return random bit
         int bit();
 
         //- scalar [0..1] (so including 0,1)
         scalar scalar01();
+
         //- vector with every component scalar01
         vector vector01();
+
         //- sphericalTensor with every component scalar01
         sphericalTensor sphericalTensor01();
+
         //- symmTensor with every component scalar01
         symmTensor symmTensor01();
+
         //- symmTensor4thOrder with every component scalar01
         symmTensor4thOrder symmTensor4thOrder01();
+
         //- diagTensor with every component scalar01
          diagTensor diagTensor01();
+
         //- tensor with every component scalar01
         tensor tensor01();
+
         //- label [lower..upper]
         label integer(const label lower, const label upper);