Asked late Monday about the existence of the informal nonpaper, White House officials referred the question to the State Department.... A State Department spokeswoman, Marie Harf, denied later Monday that there was any secret agreement.
"Any documentation associated with implementation tracks completely with what we've described," she said. "These are technical plans submitted to the International Atomic Energy Agency," the United Nations' nuclear watchdog agency....
January 14, 2014
Nonpaper — "a diplomatic term used for an informal side agreement that doesn’t have to be disclosed publicly."
"The nonpaper deals with such important details as the operation of a joint commission to oversee how the deal is implemented and Iran’s right to continue nuclear research and development during the next several months...."