Historically data traveled at much slower rates.  IBM needed a means to get that first screen of data in front of a user asap and thus the expandable subfile was born.  Programmers could push out the first screen or two of data quickly, and then as the user paged up/down, new screens could be added as needed.  With the ability to add filters and starting points a user would rarely need to scroll more than a few screens.  All in all a win-win for everyone.  Cumbersome for the programmer, yes, but it saved tons of band width.

With today's speeds and drill-downs the expandable subfile becomes, in my opinion, anachronistic.

On 11/24/2019 2:09 PM, techie21 IT wrote:
---------- Forwarded message ---------
From: techie21 IT <techiei876@xxxxxxxxx>
Date: Mon, Nov 25, 2019 at 1:35 AM
Subject: main difference between expandable and singlepage subfile
To: RPG programming on IBM i <rpg400-l@xxxxxxxxxxxxxxxxxx>


Hi,

What is main difference between expandable and singlepage subfile ?

Thanks

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