the purple line shows that now its the time that nifty pharma will give a rally, with a breakout(lets watch)..
the red line, properly gives a support line, it is holding a strong support.
we are currently in demand zone.
the two major black lines are drawn to give a range where the market will move accordingly in future, it is drawn based on the markets went consolidating at past, and based on the price movement of future.
rest, everything mentioned in the chart.