What does the IOC & GTD order mean?

IOC means immediate or cancel. The order will be filled, in whole or in part or not at all, and then any remaining portion cancelled.

GTD - A Good-Till-Date order will remain working within the system and in the marketplace, until it executes or until the close of the market on the date specified. To place a GTD order, select ‚Delivery option‚ & ‚Limit order‚.