Restricts the response to trades in a specific market.

The Cursor represents a pointer to the next page of records in the pagination.
So this optional parameter, when filled, should be filled with the cursor string returned in a previous request to this end-point.
Filling this would basically tell the api to get the next page containing the number of records passed on the limit parameter.
On the other side not filling it tells the api you want to get the first page for another query.
The cursor does not store any filters, so if any filter parameters like ticker, max_ts or min_ts were passed in the original query they must be passed again.