Module calendar 

A month grid over a host-owned calendar.

Every fact on screen — the weekday headings, the month name, which cells hold days, what a day is called, whether it may be picked, and what day it is — comes from the DateAdapter. The calendar owns the month it is looking at, where the keyboard is, and what the pointer is over.

Structs

Calendar

A month of days.

DayMark

A mark the host puts on a day, such as “three runs finished here”.

Enums

CalendarEvent

What a calendar reports. The owner decides what any of it means.