dashboard: legend doesn't interfere with graph

1 files changed, 4 insertions, 2 deletions

diff --git a/docs/dashboard.md b/docs/dashboard.md
index 531bd08..25bcfe8 100644
--- a/docs/dashboard.md
+++ b/docs/dashboard.md
@@ -123,8 +123,10 @@ every 30 s, which costs the swarm fewer messages and leaves the map up to 30 s b
 (this node's own links stay current). It's the node's choice, for every page open on
 it, until clicked again or the node restarts.
 
-The legend above the map names the transports that appear; `hide legend` beside the
-box's title gives its room to the map (`show legend` brings it back).
+The legend, over the top of the map, names the transports that appear; its contents
+are on an underlay of their own shape, as the map's labels, so they read over what is
+under them, and the map is dragged through it as anywhere else. `hide legend` beside
+the box's title hides it (`show legend` brings it back); the map stays as it is.
 
 `layout: static`, beside it, is the default: nodes move only when the map is laid out
 (below). A click switches to `layout: dynamic`: each measured link is as