code: def p_simple_instruction(p):
      
      p[0] = make_sentence(p[1], make_typecast(TYPE.ubyte, p[2], p.lineno(1)))
docs: statement : ITALIC expr
                     | BOLD expr
                     | INK expr
                     | PAPER expr
                     | BRIGHT expr
                     | FLASH expr
                     | OVER expr
                     | INVERSE expr