dashboard: subscribed nodes' messages as dots

The page reads a subscribed node's message counts from it too, and
draws them as dots on the map, as this node's own.

Auth plan M3 (live data from every reachable node).

1 files changed, 4 insertions, 1 deletions

diff --git a/docs/dashboard.md b/docs/dashboard.md
index e62b67d..45a2248 100644
--- a/docs/dashboard.md
+++ b/docs/dashboard.md
@@ -133,7 +133,10 @@ dots: they would all run at once. A dot is as large as its kind's messages were
 right after their legend makes all dots larger or smaller, and the `speed` slider after
 it makes them run faster or slower (0.1 to 0.9 map units per millisecond, 0.3 at
 first: a link of 200 in about 0.7 s); both are kept in the browser. A picture
-of the traffic, not a record of it; links between other members show none.
+of the traffic, not a record of it. A subscribed node's messages with its peers run
+along its links too, from its own counts (read from it with the page's token, as its
+links are): those with this node are drawn from this node's counts, and between two
+subscribed nodes from what the sender sent. Links between other members show none.
 `messages: on` after the sliders hides them (`messages: off` shows them again; the
 legend and the sliders greyed meanwhile); the choice is kept in the browser.