|Messages in the Clacks|
|Used on these elements|
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clacks_overhead is a changeset tag, a way to store data in the OSM editing system.
It is a reference to theseries of books, in which characters encoded messages in the as a way to honor the dead.
Known values include clacks_overhead=GNU Terry Pratchett to remember .
There is a JOSM plugin which adds it automatically to all your edits: pTerry.jar.
- Terry Pratchett’s name lives on in ‘the clacks’ with hidden web code The Guardian, 17 March 2015.