add.rule(strategy.st, name = "ruleSignal", 
         arguments = list(sigcol = "filterexit", 
                          sigval = TRUE, orderqty = "all", 
                          ordertype = "market",
                          orderside = "long", 
                          replace = FALSE, prefer = "Open"),
         type = "exit")

• replace：TRUE 會取消其他訊號，否則為 FALSE

• prefer：進場定價依據

  • bar：open、high、low、close
  • 預設：於次日／下一根 K 的收盤買入