* Merge Extract and Part to the Part expression.
  Renamed "MatrixBase::extract() const" to "MatrixBase::part() const"
* Renamed static functions identity, zero, ones, random with an upper case
  first letter: Identity, Zero, Ones and Random.
diff --git a/doc/snippets/MatrixBase_set.cpp b/doc/snippets/MatrixBase_set.cpp
index f6ccb10..9487008 100644
--- a/doc/snippets/MatrixBase_set.cpp
+++ b/doc/snippets/MatrixBase_set.cpp
@@ -3,7 +3,7 @@
       4, 5, 6,
       7, 8, 9;
 cout << m1 << endl << endl;
-Matrix3i m2 = Matrix3i::identity();
+Matrix3i m2 = Matrix3i::Identity();
 m2.block(0,0, 2,2) << 10, 11, 12, 13;
 cout << m2 << endl << endl;
 Vector2i v1;