Can you mark resources on belts in blueprints?

[Shifty]

Hi,

I have found with complex blueprints with many belts running in that it can be confusing to know which resource goes on which belt. Is there any way (or mod) of marking this in the blueprint?
Currently the best way I have found is to make a filter inserter at the start of the belt and mark that with the correct resource. But I was hoping there was a better way.

Thanks in advance

[Tym]

I have seen persons use combinators for this purpose. This can be more useful than filter inserters because you can specify left/right loading of the belt.

If you create the combinator, and assign it's values, you can then place a ghost image, rather than costing additional combinators.

[Serenity]

Yeah, use a constant combinator placed between two underground belts. You can display 4 icons that way and a belt only needs 2