The cash level visualization is designed for traders to keep track of their trading account. The cash level is defined as CL = OB ±PREM – BRO – MA,
CL is the cash level;
OB is the opening balance of the trading fund amount set by the user in the settings window;
PREM is net option premiums;
BRO is brokerage; and
MA is the OptionScape margin estimate.