switch(FEAT_INDUSTRYTILES, SELF, glass_works_tile_1_anim_control, (extra_callback_info1 & 71)) {
        
            0: return 0;
        
            1: return 1;
        
            2: return 2;
        
            3: return 3;
        
            4: return 4;
        
            5: return 5;
        
            6: return 6;
        
            7: return 7;
        
            8: return 8;
        
            9: return 9;
        
            10: return 10;
        
            11: return 11;
        
            12: return 12;
        
            13: return 13;
        
            14: return 14;
        
            15: return 15;
        
            16: return 16;
        
            17: return 17;
        
            18: return 18;
        
            19: return 19;
        
            20: return 20;
        
            21: return 21;
        
            22: return 22;
        
            23: return 23;
        
            24: return 24;
        
            25: return 25;
        
            26: return 26;
        
            27: return 27;
        
            28: return 28;
        
            29: return 29;
        
            30: return 30;
        
            31: return 31;
        
            32: return 32;
        
            33: return 33;
        
            34: return 34;
        
            35: return 35;
        
            36: return 36;
        
            37: return 37;
        
            38: return 38;
        
            39: return 39;
        
            40: return 40;
        
            41: return 41;
        
            42: return 42;
        
            43: return 43;
        
            44: return 44;
        
            45: return 45;
        
            46: return 46;
        
            47: return 47;
        
            48: return 48;
        
            49: return 49;
        
            50: return 50;
        
            51: return 51;
        
            52: return 52;
        
            53: return 53;
        
            54: return 54;
        
            55: return 55;
        
            56: return 56;
        
            57: return 57;
        
            58: return 58;
        
            59: return 59;
        
            60: return 60;
        
            61: return 61;
        
            62: return 62;
        
            63: return 63;
        
            64: return 64;
        
            65: return 65;
        
            66: return 66;
        
            67: return 67;
        
            68: return 68;
        
            69: return 69;
        
            70: return 70;
        
        return CB_RESULT_NEXT_FRAME;
    }