* 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_diagonal.cpp b/doc/snippets/MatrixBase_diagonal.cpp
index 005fba7..cd63413 100644
--- a/doc/snippets/MatrixBase_diagonal.cpp
+++ b/doc/snippets/MatrixBase_diagonal.cpp
@@ -1,4 +1,4 @@
-Matrix3i m = Matrix3i::random();
+Matrix3i m = Matrix3i::Random();
cout << "Here is the matrix m:" << endl << m << endl;
cout << "Here are the coefficients on the main diagonal of m:" << endl
<< m.diagonal() << endl;