What is the meaning of validity type "COL" in equity futures and option trading?

General
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COL Stand for Cancel on Logout.

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Cancel On Logout at User level (COL)

A tool which cancels all outstanding orders in case of a logout from the trading system whether voluntary or involuntary based on the member’s preference.

http://www.nse-india.com/archives/fo/monthly/MDU.pdf

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can you provide correct link? This is removed.