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Internal id element
The internal ID element is automatically added when you create a new list.
It renders a hidden field with the current record's numerical id.
This id auto-increments for each record you add
In the list's database table this field is also set to be the lists primary key, ensuring that each record has a unique identifier.
If you wish to create a more readable identifier then you should leave the internal id as it is and create a new calc element.
Say we want this field to show the values 'application-X' where X is the internal id value then enter the following code into the calc element's 'calc' field: