Need more functionalities in Trigger Scripts for Linked to Entry Fields:

1.In a trigger script of a library add a function parentEntry() , so when we create a linked field we can set linked library's trigger (creating an entry-opening entry edit card) with default value of fields in parentEntry if it exists.
parentEntry object should have fields data for Entry which is still being created, so we can customize value of a child entry with values of parent entry.
We do have similar linksTo() function but it only has values of entries already saved not those which are still being edited

2.Add function to Hide Fields from script in opening entry edit card script, like the dependency option, but from scripts, so we can hide unnecessary fields as per parentEntry value.

3.Also add parentEntry object to be used in javascript fields inside child library to access values of fields inside parent library.
This is very useful for cases like update "Order No." in child library order Items as per parent library Order.

4.Add option in Linked to Entry Field to disable Create an Entry (+ Button) or Select an entry button.
This is useful in Order and Order Items type scenario, when we want to create a new linked entry every time instead of selecting from existing, or reverse situation, when linked items have been created through some other parent library and we only want to choose in current library so only select option should be available.