Announcing Microsoft Lists - Your smart information tracking app in Microsoft 365

Mark-Kashman this is really a giant leap forward.  Question about related lists:  Can you point me to any information about parent/child relationships between two lists in MS Lists?  I am hoping this functionality has improved beyond what is available currently in sharepoint lists (lookup columns, related lists, etc).

An example would be:   An issue tracking list where the user can drill into a high-level item on the list and then add related items or tasks needed to clear the issue.  The related items should automatically be tied to the parent issue ID, without asking the user to select from a long list of parent items.
           
           Issue # 1
                   Related Task A
                   Related Task B
                   Related Task C

Or

            Purchase Order # 1001    $300
                   Item to be purchased A $100
                   Item to be purchased B $150
                   Item to be purchased C   $50

Thank you!