The flows list draws each flow as the editor's graph, read-only and with the
dry run's hit counts in the boxes, in place of the indented tree. A box's line
of text is cut by the browser at the box's edge, so it no longer runs out of it.
create flow (a primary button beside the refresh interval) and duplicate open
the editor on an unsaved draft at /notifications/new, with ?from= naming the
flow to copy; the flow is made by save, under an id taken from its name. Edit
and duplicate are buttons in the flow's header row. The editor's head and
inspector are laid out as sections.
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