I have been asked to clarify the use of CMO's by the IFC and just to cut the description short please find a self explanatory link here:
http://www.ifc.org/ifcext/gfm.nsf/AttachmentsByTitle/HF-CML/$FILE/HF-CML.pdf
also here a link for the acceptable collateral for the US TT&L program as it still stands:
http://www.treasurydirect.gov/instit/statreg/collateral/collateral_acctaxandloan.pdf
