The Vertical Override minicalendar modifiers allows you to specify, for any individual minicalendar, that the flow of date should be vertical (weekdays running from top to bottom) even though the corresponding minicalendar option may be set to horizontal. This is useful when mixing vertical and horizontal minicalendars on the same page. Adding this modifier is the equivalent of setting the following option for the minicalendar to which this modifier belongs :
To use this modifier, simply add :vrt to the end of any minicalendar marker.
See also: Horizontal Override.