9.4 Statement Members
procedure
(graph-member? graph statement) → boolean?
graph : graph? statement : statement? 
Return #t if statement exists in graph.
procedure
graph : graph? statement : statement? 
TBD
procedure
(graph-add-all graph statements) → graph?
graph : graph? statements : statement-list? 
TBD
procedure
(graph-remove graph statement) → graph?
graph : graph? statement : statement? 
TBD
procedure
(graph-remove-all graph statements) → graph?
graph : graph? statements : statement-list? 
TBD
procedure
(graph-remove-all* graph statements) → graph?
graph : graph? statements : statement-list? 
TBD
procedure
(graph-clear graph) → graph?
graph : graph? 
Returns a copy of this graph with all statements removed. This does not affect the graph’s name if set.