Oral mucocele (also termed mucous retention cyst, mucous extravasation cyst, mucous cyst of the oral mucosa, and mucous retention and extravasation phenomena) is a clinical term that refers to two related phenomena:1  Mucus extravasation phenomenon.ral mucocele (also termed mucous retention cyst, mucous extravasation cyst, mucous cyst of the oral mucosa, and mucous retention and extravasation phenomena) is a clinical term that refers to two related phenomena:
A CFD, or Contract for Difference, is an agreement between two parties to exchange the difference between the opening price and closing price of a contract. CFD, or Contract for Difference, is an agreement between two parties to exchange the difference between the opening price and closing price of a contract.
An update to the contract was published in draft on 8 February 2017. 1  Contracts for Difference: standard terms and conditions, December 2015 update 11 May 2016. 2  Non-delivery disincentive: policy update 28 January 2015. 3  Electricity Market Reform: Contracts for Difference frequently asked questions 11 September 2014.