In your exchange filter, the Exchange Information window for the Chicago Board of Trade contains open and close times of 9:00 and 16:00 respectively. CBOT instruments that do not have second sessions utilize these hours. On the CBOT, however, several instruments have second sessions. To plot the second sessions for these instruments, the program requires additional information about these second session hours. Therefore, your Symbols Information List contains one line for the U. S. Treasury Bond and one line for every other instrument on the CBOT that has a second session. For example, the Symbols Information List line for the U. S. Treasury Bond contains the following information: ~US fut 7:20 14:00 17:20- 06:00 32 $1000 10000 8%cpn .015625 pt 2000 The portion of the Symbols Information List line that governs trading hours is, obviously, the times listed as: ...7:20 14:00 17:20- 06:00... An instrument that has a second session opens the week on a Sunday night and closes at the end of the day session on Monday (there are typically no second sessions on Friday nights). To specify this phenomenon in the Symbols Information List, the second session open is followed by a dash. In context of the U. S. Treasury Bond, notice the dash following the open of the second session: ...17:20- 06:00... With Globex hours, second session trading is often sparse. Until Globex trading increases during second sessions, you can eliminate data gaps and still see second session trading by assigning the following command to a function key:Examples