The window a range covers, ending at options.end. A session range walks
back through the calendar's sessions when there is one; without one it
counts the dates of the loaded bars, or weekdays when none are loaded. A
month or a year runs from midnight on the same date that far back, the year
to date from the first of January, all history from the first loaded bar
(or 30 years back before any are loaded). Months, years and dates without a
calendar are counted in options.zone.
The window a range covers, ending at
options.end. Asessionrange walks back through the calendar's sessions when there is one; without one it counts the dates of the loaded bars, or weekdays when none are loaded. A month or a year runs from midnight on the same date that far back, the year to date from the first of January, all history from the first loaded bar (or 30 years back before any are loaded). Months, years and dates without a calendar are counted inoptions.zone.