* 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_isIdentity.cpp b/doc/snippets/MatrixBase_isIdentity.cpp
index 19d0156..17b756c 100644
--- a/doc/snippets/MatrixBase_isIdentity.cpp
+++ b/doc/snippets/MatrixBase_isIdentity.cpp
@@ -1,4 +1,4 @@
-Matrix3d m = Matrix3d::identity();
+Matrix3d m = Matrix3d::Identity();
m(0,2) = 1e-4;
cout << "Here's the matrix m:" << endl << m << endl;
cout << "m.isIdentity() returns: " << m.isIdentity() << endl;