1macro try 2println \1, "\2:" 3def prefix equs \1 4{prefix}\2 = 10 5println \2 ; 10 6{prefix}\2 += 5 7println \2 ; 15 8{prefix}\2 -= 1 9println \2 ; 14 10{prefix}\2 *= 2 11println \2 ; 28 12{prefix}\2 /= 4 13println \2 ; 7 14{prefix}\2 %= 3 15println \2 ; 1 16{prefix}\2 |= 11 17println \2 ; 11 18{prefix}\2 ^= 12 19println \2 ; 7 20{prefix}\2 &= 21 21println \2 ; 5 22{prefix}\2 <<= 2 23println \2 ; 20 24{prefix}\2 >>= 1 25println \2 ; 10 26purge prefix 27endm 28 29 try "", p 30 try "def ", q 31 try "redef ", r 32 33_RS += 100 34println _RS 35 36__LINE__ *= 200 37println __LINE__ 38 39UnDeFiNeD ^= 300 40println UnDeFiNeD 41