Structured events support three span styles:
Draws a solid rectangular span.
Draws half-width rounded caps on the inside edges of the start and end dates. This helps adjacent events avoid visually clobbering each other.
Draws diagonal caps similar to a gantt-style slash.
Use markers to draw green marker circles on specific dates:
{
"start_date": "3/1/2025",
"end_date": "3/5/2025",
"markers": ["3/5/2025"]
}Marker-only events are also supported:
{
"markers": ["3/5/2025"]
}Legacy list-based events still render with the original checkout-style marker on the day after the final date. Structured events do not do this unless you add the marker explicitly.



