Links to callbacks
A has a tooltip and a callback
B has a link and a tooltip
C has a long tooltip
graph LR;
A-->B;
B-->C;
click A callback "Tooltip"
click B "http://www.github.com" "This is a link"
click C callback "Tooltip quite long tooltip. So long that several rows are required... Not just two rows..."
Links to urls
A second diagram that should have its own callback on A even though the node has the same id.
graph LR;
A-->B
B-->C
click A callback2 "Tooltip3"