.dag
extension.
A DAG is a Graph that does not have cycles. Support for DAGs is built
into the kernel in the
DirectedAcyclicGraph
class.
EditDAG class is derived from the
Graphics class, and therefore
inherits all of its features.
Editing DAG nodes is not supported.
The viseditViewOnly
preference controls whether the
Edit
menu appears. This preference is a member
of the interaction
style sheet.
By default viseditViewOnly
is true, which means that
the EditDAG class is only a viewer, nodes cannot be edited.
Nodes in the canvas widget can be mouse sensitive. For an example of
DAG, see
$TYCHO/doc/tychoClasses.dag
For DAG file format information, see the EditDAG
code documentation.