What signals should I use?

To buy a stock: BTO (this means Buy To Open)
To sell a stock: STC (this means Sell To Close)

To buy at the market price:

BTO @ market

To sell at the market price:

STC @ market

To buy a stock: BTO (this means Buy To Open)
To sell a stock: STC (this means Sell To Close)

To buy at the market price:

BTO @ market

To sell at the market price:

STC @ market