Documentation/AlgoCode/Function reference
buy
Open or add a long (or cover a short if the script is short only).
buy
Inside a when body. Dovee draws a Buy arrow and the bar close (Buy @ 24150.00) — you do not need arrow, label, or paint. With long only, buy is the only entry. By default (one trade at a time), a second buy is ignored while already long — no extra Buy arrow until a sell or exit. Write re-entry to allow adds. Live size still comes from Deploy, not from this word.
Return value
signal +1
Example
when close crosses above ema(21) buy
