{"action":"opened","issue":{"url":"https://api.github.com/repos/w3c/svgwg/issues/64","repository_url":"https://api.github.com/repos/w3c/svgwg","labels_url":"https://api.github.com/repos/w3c/svgwg/issues/64/labels{/name}","comments_url":"https://api.github.com/repos/w3c/svgwg/issues/64/comments","events_url":"https://api.github.com/repos/w3c/svgwg/issues/64/events","html_url":"https://github.com/w3c/svgwg/issues/64","id":139878523,"number":64,"title":"Marker element percentages are missing reference values","user":{"login":"karip","id":6185066,"avatar_url":"https://avatars.githubusercontent.com/u/6185066?v=3","gravatar_id":"","url":"https://api.github.com/users/karip","html_url":"https://github.com/karip","followers_url":"https://api.github.com/users/karip/followers","following_url":"https://api.github.com/users/karip/following{/other_user}","gists_url":"https://api.github.com/users/karip/gists{/gist_id}","starred_url":"https://api.github.com/users/karip/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/karip/subscriptions","organizations_url":"https://api.github.com/users/karip/orgs","repos_url":"https://api.github.com/users/karip/repos","events_url":"https://api.github.com/users/karip/events{/privacy}","received_events_url":"https://api.github.com/users/karip/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-03-10T12:57:37Z","updated_at":"2016-03-10T12:57:37Z","closed_at":null,"body":"The current version of SVG2 document adds <percentage> as valid value for 'markerWidth', 'markerHeight', 'refX' and 'refY' in the <marker> element [1]. However, it doesn't say which value the percentages are relative to.\r\n\r\n'refX' and 'refY' could be relative to the marker view box, because they are in the same coordinate space as marker content. I'm not sure which value 'markerWidth' and 'markerHeight' should refer to (stroke-width?).\r\n\r\n[1] https://svgwg.org/svg2-draft/painting.html#MarkerElement\r\n"}}