-RAND_pseudo_bytes() puts B<num> pseudo-random bytes into B<buf>. These
-bytes are guaranteed to be unique, but not unpredictable. They can be
-used for non-cryptographic purposes and for certain purposes in
-cryptographic protocols, but not for key generation etc.
+RAND_pseudo_bytes() puts B<num> pseudo-random bytes into B<buf>.
+Pseudo-random byte sequences generated by RAND_pseudo_bytes() will be
+unique if they are of sufficient length, but are not necessarily
+unpredictable. They can be used for non-cryptographic purposes and for
+certain purposes in cryptographic protocols, but usually not for key
+generation etc.