begin

The begin function encloses a group of statements that form the body of an if/then/else statement or a while loop.

You can use the if/then/else keywords to run one or more statements conditionally. If you include more than one statement in the body of an if/then statement, you must surround the statements with the begin/end keywords. If you use only a single statement, you can omit the begin and end.

if condition then
begin
     statement1;
     statement2;
end