+ { title => t8('Letter'), type => 'letter', model => 'Letter', number => 'letternumber', description => 'subject', description_title => t8('Subject'), date => 'date', project => undef },
+ { title => t8('Email'), type => 'email_journal', model => 'EmailJournal', number => 'id', description => 'subject', description_title => t8('Subject'), },
+ { title => t8('AR Transaction'), type => 'ar_transaction', model => 'Invoice', number => 'invnumber', },
+ { title => t8('AP Transaction'), type => 'ap_transaction', model => 'PurchaseInvoice', number => 'invnumber', },