"I am the bone of my sword.
Steel is my body, and fire is my blood.
I have created over a thousand blades.
Unknown to death.
Nor known to life.
Have withstood pain to create many weapons.
Yet, those hands will never hold anything.
So, as I pray, 'Unlimited Blade Works'."
I think that I shall never see
A graph more lovely than a tree.
A tree whose crucial property
Is loop-free connectivity.
A tree which must be sure to span.
So packets can reach every LAN.
First the Root must be selected
By ID it is elected.
Least cost paths from Root are traced
In the tree these paths are placed.
A mesh is made by folks like me
Then bridges find a spanning tree.