_ _____ __
| |/ _ \ \/ /
_ | | | | \ /
| |_| | |_| / \
\___/ \___/_/\_\
Passing control information through channels
_ _____ __
| |/ _ \ \/ /
_ | | | | \ /
| |_| | |_| / \
\___/ \___/_/\_\
Passing control information through channels