Thomson ReutersTORONTO (Reuters) - The Toronto Stock Exchange's efforts to win a slice of the massive Saudi Aramco public listing plays up the country's deep experience in natural resources as part of a broader offer to help the kingdom with its shift away from oil dependence. In pitch documents obtained by Reuters, the TSX talks up "a customized regulatory environment for resource issuers", its leading position in oil and gas equity capital raising, and strong trading interest from outside the country. The Canadian pitch is also broader than just for a slice of the Aramco IPO.