In Clarion, I use queues quite a bit as a great way to deal with multiple instances of structured data in memory instead of storing in a table or file. WinDev has several advanced data types that can be used, but none of them are the exact same as a Clarion Queue. This includes: Simple Arrays, Associative Arrays, Dynamic Arrays, Fixed Arrays, Composite Variables, Structures, Dynamic Structures, Queue, List, Stack, and then there are memory tables which are not technically a variable type.