What is an "NFA account"? If one reads the Zorro manual, one might think it simply means any account in the USA. I do not think this is so.

* FINRA regulates the (USA) stock market.
* CFTC regulates the (USA) commodity market.
* And finally, NFA regulates the (USA) futures and forex markets.

NFA stands for National Futures Association. Participating organizations are:
* (USA) futures brokers
* (USA) futures options brokers
* (USA) forex brokers

The Zorro manual says all NFA accounts have to observe NFA Compliance Rule 2-43(b).

Actually, all NFA-regulated forex brokers must observe this rule.

Therefore:
* USA stocks & options, etc.
* USA futures & futures-options,

... are traded simply with orders to change a net position. In other words, "trades" are not a real thing, FIFO does not apply, and partial-closing is allowed because trades are irrelevant. And, technically, any order that puts my net position closer to or equal to zero is an order to close, regardless of how a "trade" ended.

**And**, depending on the broker, you can sometimes change the net position of an asset from net positive (long) to net negative (short) with a single trade.

Can the manual be modified to:
* Clarify the distinction between NFA-forex regulations and other USA-style regulations?
* Clarify how to handle the USA net-position style accounts, both from a Broker API and User-end perspective? (I assume I need virtual hedging with partial closing allowed, but I'm not sure.)

Thanks.