'BEGIN'
    'COMMENT' A SYNTAX PASS IS REQUIRED TO REMOVE COMMENTS;
    'PROCEDURE' P( ST );'COMMENT' ST IS A STRING;'COMMENT';
        'STRING' ST; ;'COMMENT' DUMMY BODY;
    P( <;'COMMENT'<;>> );
    'BEGIN'
        'PROCEDURE' Q( A ) PARAMETER COMMENT :( B );
            'REAL' A, B; ;'COMMENT' DUMMY AGAIN;
        Q( 1.0, 2.5 ); 'COMMENT' IS THE SAME AS;
        Q( 1.0) WITH PARAMETER COMMENT:( 2.5 );
    'END' COMMENT CAN INCLUDE MOST BASIC SYMBOLS 'FOR'
        'WHILE' 'THEN''IF' 'DO' := 'BEGIN'( WHICH ARE NOT MATCHED;
'END'