Nodes

• What Do “Bend Left” and “Bend Right” Mean in TikZ?
  In TikZ, bend left and bend right curve a to or edge path relative to its direction; learn the default angle, syntax, and a compilable example.
• Why Does an Arrow Disappear in a TikZ Draw Command?
  TikZ arrows can disappear when a path ends at a node center and the node covers the arrowhead. Use to or explicit shape anchors.