Question about the example app, CRM

I am learning Joget and have some question about the provided example, CRM.

I don't understand the value in following fields;

1. In the Datalist section named "Account Listing", Column named "Contact", the value of Hyperlink , "contact_list?d-6304176-fn=account"
2. In the Datalist section named "Account Listing", Column named "Contact", the value of Parameter Name, "d-6304176-fv"
3. In the Datalist section named "Account Listing", Column name "New Contact", the the value of Parameter Name, "fk_account"

I want to do the link in Datalist as I see in the CRM example. But I don't understand the value in these fields. Could anyone explain or provide the link that explain these value?

Thank you in advance.