I dont write the manual but I think it is always updated when someone on the forum does not understand something in the manual. It also answers your question:

"BR_LEISURE Don't enter or manage trades between EndMarket and StartMarket, at holidays, and between EndWeek and StartWeek in the bar time zone (BarZone)."

https://zorro-project.com/manual/en/date.htm

EndMarket and Startmarket are predefined variables, you can set them in your script and can of course also set them to Assetmarketstart etc. Hope this answers your question.