Combined OP Lines and Daily High/Low

This Pine Script v6 indicator for TradingView ("Combined OP Lines and Daily High/Low") overlays the chart and visualizes in UTC+02:00 (manually adjust for DST):

OP Lines: At 0:00 (new day) and 6:00 AM, draws black horizontal lines at the opening price (extend right), vertical black markers, and labels ("OP 0:00"/"OP 6:00"). Old elements are deleted.
Previous Day High/Low: Blue thick horizontal lines (extend right) with labels ("Daily High/Low: [Price]"), based on request.security (daily TF, high/low[1]).

Useful for day trading: Marks intraday sessions and prior-day extremes as support/resistance. Purely visual, dynamically updated, efficient (resource management). Limitations: Fixed timezone, no alerts, colors could be optimized.