# Dictionary

Estimated reading time: 1 minutes.

**Dark Mode:**"Dark Mode" or "Dark Appearance" is a feature introduced with macOS 10.14 Mojave, a bright dark appearance for the whole of macOS. As a result, you can export any diagram in dark or bright mode (except PDF - which only knows bright mode)

**Notation Structure View:**Notation structure views are showing schematically the Notation. Each node represents a Node Type. The On/Off symbol represents the starting point. Edges going from their point to the Starting Node Types. From there the Edges show suggested predecessors and successors. So if a Concept Node Type has an edge pointing at the Relation Node Type then Concept is a suggested predecessor for a Relation. If the Edge has arrows at both sides is each Node Type a suggested predecessor (and successor) of the other? If there is an Edge that points with both sides to the same Node Type, then the Node Type can be its own predecessor (and successor).

**Starting Node Type**(previously named Starting Point): Notations' starting Node Types will be suggested when you create the first node in a Graph. Any Node Type can be a starting Node Node Type. In a Notation Structure View you can see the Power On/Off symbol at the bottom. Edges are pointing from the On/Off symbol towards the Starting Node Types.