City walk is a type of the planner: routed on foot without a hiking limit, on
the standard map. Each stop is edited in its own dialog, its name, its stay
(empty is not known, 0 a point passed through), its importance and whether a
proposed change must leave it; none of it plans the route again. The walk's
time is walking plus the stays, at least that much while a stay is unknown,
with no breaks on top.
Maurice
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