Delimited scope statements
A delimited scope statement is a statement (for example, an IF statement) which is terminated by a matching explicit scope terminator (in this case END-IF). Thus, all the statements between a delimited scope statement and its paired explicit scope terminator are deemed to be contained within that delimited scope statement. Delimited scope statements can be nested, in which case each explicit scope terminator encountered in the program is considered to pair with the nearest preceding unpaired matching delimited scope statement.