Hi, all. Our desk, managing hedge portfolios, has risk policies that have limit amounts for each greek exposures and quarterly & annual loss cut as well as VAR. I heard that some IBs use only loss cut and VAR. and others do case by case.There are questions that arise from these limits:(1) What do you think the best practice is? (2) How can I compute each tolerances and discover their relation when I apply these all risk limits? e.g. When delta limit are $1m, vega limit $10m..., then how much is the reasonable VAR or loss cut?(3) How about a prop desk and prop traders' standpoint? And any related comments or topics are welcome.