From the Release Notes, v.78 (a while back - 2020), it's just the new name for what used to be called Open Circuit Recreational mode (OC Rec).
As noted above, the new name merely highlights that even if recreational (vs Tech), the computer allows you to select multiple gases.
It's not in the manual if your manual version is older than 2020, since it was added in an update.
As noted above, the new name merely highlights that even if recreational (vs Tech), the computer allows you to select multiple gases.
It's not in the manual if your manual version is older than 2020, since it was added in an update.