GENERAL NOTES
SUMMARY OF XSF FLAGS
GENERAL OPERATION
·           If transition from AØ -> CØ, close down SG2 together with SG1 at the start of AØ yellow. Introduce SG2 at the end of CØ late start period. 
·           If transition from BØ -> CØ, introduce SG2 at the start of CØ late start period.