I would like to add a chart to an existing Wiki document - Grand Union Canal but dont know how to go about doing this. Any help would be appreiciated.

Use a Routemap - I'm just finishing up the River Brent, a work in progress, top is the WIP, bottom for my reference, links at top should help. See my sandbox for how it works Sciencefish (talk) 10:43, 6 October 2021 (UTC)Reply