An edge that starts or ends on a group -- subgraph --> node in a
flowchart, a transition into a composite state -- is drawn from the group
as a whole, so it is read as an edge from the nodes the group ends on, or
to the nodes it starts on. A group no node sits
in has nothing to open and is left out, as a directed graph derives its
scopes from its nodes.
Builds the layer.
An edge that starts or ends on a group --
subgraph --> nodein a flowchart, a transition into a composite state -- is drawn from the group as a whole, so it is read as an edge from the nodes the group ends on, or to the nodes it starts on. A group no node sits in has nothing to open and is left out, as a directed graph derives its scopes from its nodes.