Display VS Screen

[Lerebours, Jose]

Our friend Doug wrote:

[ snip ]

> 
> Personally .. If I have a display only screen, I always have a one
> character
> field on the screen somewhere to prevent the Dread Whoops 
> "Where'd those
> 
> 80,000 extra records come from".
> 
> No coding needed (Other then x(1) ).

No matter which screen or its use, I always reserve a dummy variable
to capture/control screen flow.

Some of the reasons:
1) I want to make sure that records are added starting at a specific
   screen.  
2) I want to make sure that info in a given screen is only accessed
   if other conditions are met
3) Check user security level
4) Check record condition.  In an integrated system, you might need
   to use "soft record locking" (this is what I call it).  This is
   when you virtually lock a record based on flags placed by process
5) etc., etc., etc ...

This practice has proven very useful and so I use it without
exception.

Regards;


Jose Lerebours