The reserved word
begin is used to indicate the start of the executable section of a
function, method of an
property of an object, or is used to delineate the start of a block statement.
program Project1; var (..); begin (..); end.
For a block statement, it delineates the top of the block, and is also terminated by an
if (..) then begin (..) end else begin (..) end;
begin must be closed with