[FLOW3-general] nested lists

[Michael Stein]

Hi there,
I'm new to fluid.
I have a database many object of type A, B, C
I need a list
- type A:
-- obj 1
-- obj 2
-- obj 3
- type B:
-- obj 4
-- obj 5
-- obj 6
- type C:
-- obj 7
-- obj 8
-- obj 9

etc.

Can one give me a hint how to solve this?

Michael