toctree is great and I am looking for a way to display the list in another way.

For example I can have today:

* bear
* bird
* cat
* cow
* dog

I would like to be able to have:

B
* bear
* bird

C
* cat
* cow

D
* dog

• Does it exist a way to do this simply ?
• Or having filter or pagination ?
• If not, can I extend the toctree behavior ? with code I think ? I am not a good dev, so if you can explain me a little bit...

Thanks a lot,
Regards.