How are secured creditors treated in an insolvency proceeding? How do they protect their collateral, particularly liquid assets? Can they seek remedies? Must their approval be obtained to use or dispose of their collateral? Do liens on receivables, revenues or cash flow continue with respect to such collateral after a debtor’s insolvency filing has been accepted by a court, or are they cut off as of the date of the filing or acceptance? If they are not cut off, may the debtor use that cash collateral and, if so, must it provide any protection to the secured creditors?