diff --git a/docs/courses/comp-206.org.gpg b/docs/courses/comp-206.org.gpg
index 8c58557..97f0d07 100644
Binary files a/docs/courses/comp-206.org.gpg and b/docs/courses/comp-206.org.gpg differ
diff --git a/docs/images/comp-206-inheritance-reusing-the-implementation-1.png b/docs/images/comp-206-inheritance-reusing-the-implementation-1.png
new file mode 100644
index 0000000..18652d7
Binary files /dev/null and b/docs/images/comp-206-inheritance-reusing-the-implementation-1.png differ
diff --git a/docs/images/comp-206-inheritance-reusing-the-implementation-2.png b/docs/images/comp-206-inheritance-reusing-the-implementation-2.png
new file mode 100644
index 0000000..00f5af6
Binary files /dev/null and b/docs/images/comp-206-inheritance-reusing-the-implementation-2.png differ