| Slot name | Value | Meaning in DOT |
| id | a string | the reference name of a graph, as in graph id { ... } |
| strict? | a boolean | indicates strictness, as in strict graph { ... } |
| directed? | a boolean | corresponds to digraph { ... } vs. graph { ... } |
| statements | a sequence | the defining "body", as in graph { ... statements ... } |
| • | subgraph |
| • | node |
| • | edge |
| • | graph-attributes |
| • | node-attributes |
| • | edge-attributes |