Squashed 'ccut/' content from commit 0b80f42

git-subtree-dir: ccut
git-subtree-split: 0b80f42e1c03c9b5c9eb498991916643451e6217
Merge commit 'b5a87078496550c8b99bc46c595a82261c967045' as 'ccut'
create docs sub tree