[Koha] On a format of 'Framework code'

Hi Koha-community, I have the following questions to "Koha 3.14 Manual (en)". 1) Does a Koha-term 'framework' denote the same object as a 'Field Definition Table' in CDS/ISIS ? 2) What format has a 'Framework code' in the window 'Add framework' ? Example ? (A path to this window: Home > Administration > MARC frameworks > Add framework). Wishes, Gennady