-The files containing random data for seeding the random number
-generator. Multiple files can be specified, the separator is B<;> for
-MS-Windows, B<,> for VMS and B<:> for all other platforms. (Optional)
+A file or files containing random data used to seed the random number
+generator.
+Multiple files can be specified separated by an OS-dependent character.
+The separator is B<;> for MS-Windows, B<,> for OpenVMS, and B<:> for
+all others.
+
+=item [B<-writerand file>]
+
+Writes random data to the specified I<file> upon exit.
+This can be used with a subsequent B<-rand> flag.