J40
LIFFE is continually sending messages, about the hourly fix of cocoa, whether Fast Market is On or Off, the Euribor settlement etc, etc
At about 7.45 each morning they send a message called FTSE Opening Call. It's a price and range. Today it was 4080 +/- 50. It very rarely goes out of that range.
If the outer limits tie up with EW ranges and/or pivots it's a signal for me.