What is market wide position limit?

the market wide position limit in any security (NSE - National Stock exchange) India is considered to be lower of the following two -

a) 30 times the average turnover per day in the previous calendar month for the underlying security OR

b) 20% of non-promoter holding in the underlying security (Free float)

This limit then becomes applicable on all open positions of all FNO contracts of that underlying stock.