# Node LInk Diagram - Vertices (Nodes) are mapped to graphical shapes circles, squares, triangles, etc. - Edges (Links) are mapped to straight or curved lines - Nodes can freely be positioned - [Cross Minimization](Cross%20Minimization.md) - [Bend Minimization](Bend%20Minimization.md) - [Area Minimization](Area%20Minimization.md) - [Cross angle Maximization](Cross%20angle%20Maximization.md) - [Length Optimization](Length%20Optimization.md) - [Symmetries Node Link](Symmetries%20Node%20Link.md) - [Node Distribution](Node%20Distribution.md) - [Force Directed Graph Layout](Force%20Directed%20Graph%20Layout.md) - [Hierarchical Edge Bundling](Hierarchical%20Edge%20Bundling.md)