Описание протокола OUCH Version 1.05
http://www.isld.com/resources/designspecs/ouch.htm

гл. 6
"Current Restrictions

The current OUCH software implementation has the following restrictions:

6.1 Minimum share orders must be Immediate or Cancel (TIF=0),
otherwise they will reject with a reason of "SHARES". We still have
not come up with a fair and computationally efficient rule for
executing minimum share orders on the book. If you have any ideas,
please send us an e-mail.
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