SAME STRATEGIES A,B,C,D

hello  coders , below is 60 percent of logic of the strategy.   firstly Execution must work in real time with high accuracy.  Code should be clear ,maybe modular . 2. Trailing line of Strategy A , BuyExecution_A Line ,SellExecution_A Line will be shown to watch "live" on Chart. if you have experience of phyton is also good

STRATEGY A: At Start Open a Buy and a sell position at the same time and price. The coming positions will use limit orders, buy limit from the lower price ,sell limit from the upper price . Execution speed is highly important and needs clean coding,must work in real time with high accuracy. So we need to use  OrderSendAsync() and maybe OnTradeTransaction() instead of Ordersend() ,Also for speed we may/should choose for filling "request.type_filling = ORDER_TYPE_FILLING_FOK;  but developer's choice is   important.