diff --git a/docs/images/cap_fill2.png b/docs/images/cap_fill2.png new file mode 100644 index 0000000..268911a Binary files /dev/null and b/docs/images/cap_fill2.png differ diff --git a/docs/images/cap_rough.png b/docs/images/cap_rough.png new file mode 100644 index 0000000..6aca05c Binary files /dev/null and b/docs/images/cap_rough.png differ