Русско-англо-русский юридический словарь

In commercial practice, particularly when transactions of considerable complexity are involved, it is quite frequent that after prolonged negotiations the parties sign an informal document called “Preliminary Agreement”, “Memorandum of Understanding”, “Letter of Intent” or the like, containing the terms of the agreement so far reached, but at the same time state their intention to provide for the execution of a formal document at a later stage (“Subject to Contract”, “Formal Agreement to follow”). (UNIDROIT PRINCIPLES 2010 )

In commercial practice, particularly when transactions of considerable complexity are involved, it is quite frequent that after prolonged negotiations the parties sign an informal document called “Preliminary Agreement”, “Memorandum of Understanding”, “Letter of Intent” or the like, containing the terms of the agreement so far reached, but at the same time state their intention to provide for the execution of a formal document at a later stage (“Subject to Contract”, “Formal Agreement to follow”). (UNIDROIT PRINCIPLES 2010)

Professional development is learning to earn or maintain professional credentials such as academic degrees to formal coursework, conferences and informal learning opportunities situated in practice. (Wikipedia)

"If you are moving the informal economy into the formal economy and if the transactions which for years were never reported as part of GDP are now transacted through banking channels, it will only add to the GDP, not reduce the GDP," he added. (Forbes)