Add the following text at the end of the section:
A parameterized class may extend another parameterized class. For example:
class C #(parameter type T = bit); ... endclass // base class
class D1 #(parameter type P = real) extends C; // T is bit (the default)
class D2 #(parameter type P = real) extends C #(integer); // T is integer
class D3 #(parameter type P = real) extends C #(P); // T is P
Class D1 extends the base class C
using the base class's default type (bit) parameter. Class D2 extends the base
class C using an integer parameter. Class D3 extends the base class C using the
parameterized type (P) with which the extended class is parameterized.