-$Request ||= 'bw';
-$Request = 'hots' if $Request eq '2';
-my %scver = %{ $scvers{$Request} }
- or Abort("Requested version $Request not available", '404 unknown');
+my $requestver = $scvers{$Request ||= 'index'}
+ or Html(), Abort("Requested version <q>$Request</q> not available", '404 request not found');
+
+if (ref $requestver ne 'HASH') {
+ $header{Location} = "/sc/$requestver";
+ Abort("Canonical URL for $Request is at $requestver", '302 subpage alias');
+}