I'd like to learn more about Deep Backtesting

• What is Deep Backtesting?
• Why are the results of Deep Backtesting not shown on the chart?
• How does Deep Backtesting work?
• Why do the data of the regular mode and Deep Backtesting not match?
• Why are the calculation results in the Deep Backtesting mode not loading?
• How much data is available for Deep Backtesting?
• I see 'Failed to recalculate study because response is too large' error
• What restrictions apply while using the Deep Backtesting mode on continuous futures?