Typo (userguide).
diff --git a/src/site/apt/userguide/rng.apt b/src/site/apt/userguide/rng.apt
index 5b76106..cd8f6e4 100644
--- a/src/site/apt/userguide/rng.apt
+++ b/src/site/apt/userguide/rng.apt
@@ -394,16 +394,16 @@
int n = 6;
int k = 3;
-// If the order of the subset must be random
+// If the order of the elements matters.
PermutationSampler permutationSampler = new PermutationSampler(RandomSource.create(RandomSource.KISS),
n, k);
-// n! / (n - k)! = 120 permutations
+// n! / (n - k)! = 120 permutations.
int[] permutation = permutationSampler.sample();
-// If the elements of the subset must be random
+// If the order of the elements does not matter.
CombinationSampler combinationSampler = new CombinationSampler(RandomSource.create(RandomSource.KISS),
n, k);
-// n! / (r! (n - k)!) = 20 combinations
+// n! / (k! (n - k)!) = 20 combinations.
int[] combination = combinationSampler.sample();
+--------------------------+
