Arrests of Greenpeace activists, protesters, demo blocks railway, reach fence

What does the term 'duration' refer to in the context of the provided text?

How is the 'offset' value significant in relation to the 'duration'?

Can you explain the meaning of '2nd.' in the context of the text?

What implications might the 'duration' have on the content being referenced?

In what scenarios might the 'offset' be used in practical applications?