<compile-time begin statement>
── ̍BEGIN ──<compile-time text>── ̍END ──<end remark>──────────────────┤
Any ALGOL source text, including any complete compile-time statement.
A 'BEGIN statement delimits a portion of ALGOL source text. It is normally used in conjunction with 'FOR statements, 'IF statements, and 'THRU statements. If the 'BEGIN statement is executed, the compiler processes all the delimited text; otherwise, the compiler skips (ignores) the text. Anything following the 'END up to the first special character, END, ELSE, 'END, 'ELSE, or UNTIL is considered to be an <end remark> and is ignored.
