NFM07 shows Q8 as the restriction.
This is the bit about SVR fares in Q8
Ticket Code: BVR/SVR
Ticket Class: STANDARD
Ticket Name: OFF-PEAK
Single/Return: RETURN
Out Validity:-
Day - DATE ON TICKET
Time - SEE BELOW
Return Validity:-
Day - ONE CALENDAR MONTH
Time - SEE BELOW
Break of Jrny: (OUT) YES
(RTN) YES (SEE NOTES BELOW)
Pre-Booking Requirement: NONE
Reservations Compulsory: NO
Child Discount: YES
Railcard Discount: YES
Group Discount: YES
Refunds: SEE 'REFUNDS' SECTION
But I don't quite understand this bit
BREAK OF JOURNEY
Off-Peak Singles and the outward portion of Off-Peak Returns are valid for travel on the date shown on the ticket.
Where a passenger wishes to stop overnight or the journey cannot be completed within one day, break of journey for an overnight stay is allowed.
Where a journey continues into the next day, travel must resume before 1200 and any relevant time restrictions apply (except where regarded as an unbroken continuation of the previous day's travel where the first connection of the day may be taken).
No further break of journey is allowed except for the purpose of changing trains.
Please note that break of journey is not permitted on some journeys, as detailed_in the ticket restrictions.
Return portions of Off-Peak Return tickets are valid for travel until 0230 on the day following the last day of validity (i.e. one calendar month from the outward journey). If a passenger is still travelling at 0230, they may stay on the train to complete that part of the journey but no further break of journey is allowed and all travel must be completed by 1200.
Note: Cross London transfers will only be accepted by London Underground on the date shown on the ticket (or last day of validity for Off-Peak Returns) and until 0429 the following day.
Does that mean a break (that isn't an overnight stay) is allowed on the outbound journey or not?