Quote from jack hershey:
Put gap in the squ column from now on. Occasionally there will be a check mark in the SQU column as well.
Make up a glossary page for gap and I will correct it if necessary after you post it.
A gap it a difference in price between a prior close and a forming open.
the necessity to eliminate the gap can be found on any topic that treats how data longer than a quarter is processed mathematically. when you find that discussion add the reference for the convenience of others.