req hash
[- $req = shift; -]
[$ foreach $key (sort keys %$req) $]
[+ $key +]
[$ if (ref $req->{$key} eq 'HASH') $] [$ foreach $key2 (sort keys %{$req->{$key}}) $] [+ "$key2 -> $req->{$key}->{$key2}" +]
[$ endforeach $] [$ else $] [+ $req->{$key} +] [$ endif $]
[$ endforeach $]