+sub calc_units { 0; }
+
+#fallback for everything except bulk.pm
+sub hide_svc_detail { 0; }
+
+=item recur_cost_permonth CUST_PKG
+
+recur_cost divided by freq (only supported for monthly and longer frequencies)
+
+=cut
+
+sub recur_cost_permonth {
+ my($self, $cust_pkg) = @_;
+ return 0 unless $self->freq =~ /^\d+$/ && $self->freq > 0;
+ sprintf('%.2f', $self->recur_cost / $self->freq );
+}
+
+=item format OPTION DATA
+
+Returns data formatted according to the function 'format' described
+in the plan info. Returns DATA if no such function exists.
+
+=cut
+
+sub format {
+ my ($self, $option, $data) = (shift, shift, shift);
+ if (exists($plans{$self->plan}->{fields}->{$option}{format})) {
+ &{$plans{$self->plan}->{fields}->{$option}{format}}($data);
+ }else{
+ $data;
+ }
+}
+
+=item parse OPTION DATA
+
+Returns data parsed according to the function 'parse' described
+in the plan info. Returns DATA if no such function exists.
+
+=cut
+
+sub parse {
+ my ($self, $option, $data) = (shift, shift, shift);
+ if (exists($plans{$self->plan}->{fields}->{$option}{parse})) {
+ &{$plans{$self->plan}->{fields}->{$option}{parse}}($data);
+ }else{
+ $data;
+ }
+}