diff --git a/docs/manual/images/fig5.png b/docs/manual/images/fig5.png new file mode 100644 index 0000000..4a4c18a Binary files /dev/null and b/docs/manual/images/fig5.png differ diff --git a/docs/manual/images/fig8.png b/docs/manual/images/fig8.png new file mode 100644 index 0000000..26f9c20 Binary files /dev/null and b/docs/manual/images/fig8.png differ