The term angle of refraction is identified in base64 scheme by the sequence YW5nbGUgb2YgcmVmcmFjdGlvbg==, while the MD5 signature is equal to aa69afc2771dd88cf0b1e550b53758c7. The ASCII encoding of angle of refraction in hexadecimal notation is 616e676c65206f662072656672616374696f6e.