a (as far as R allows this) 'basic' block
CfgVertex.makeBlock() - for a helper function to create basic block vertices
something like an addition, ...
CfgVertex.makeExpression() - for a helper function to create expression vertices
The explicit exit-nodes to ensure the hammock property.
CfgVertex.makeMarker() - for a helper function to create end marker vertices
something like an if, assignment, ... even though in the classical sense of R they are still expressions
CfgVertex.makeStatement() - for a helper function to create statement vertices
The type of a vertex in the ControlFlowGraph. Please use the helper object (e.g. CfgVertex#getType|getType()) to work with vertices instead of directly accessing the properties.