Order Types

N1 supports four CLOB order types.

Type	Execution
Limit	Trades at the limit price or better, then posts any remaining quantity
Post-only	Posts only if it would not execute immediately; otherwise the entire action is rejected
Immediate-or-cancel (IOC)	Executes immediately up to the order constraints and cancels the remainder
Fill-or-kill (FOK)	Fills the entire requested amount immediately or cancels without a partial fill

IOC and FOK orders do not rest on the book. An immediate order without a price limit executes against available liquidity and remains limited by its specified amount.

Reduce-only

Reduce-only may be applied to a perpetual order. The order must be opposite the current position and cannot increase exposure or flip the position.

Reduce-only execution is capped at the current position size. If the position changes, open reduce-only orders may be resized or canceled to prevent them from exceeding the remaining position.