I take it that at present (I am using Factorio 1.0, corresponding Factorissimo2) I cannot have the factory overlay show a fluid because I cannot drop a fluid into the chests?

Did I see that a soon-to-be-forthcoming update will allow me to pick the product symbol without having to drop a product into a chest?

The update is already out but it is only available for Factorio 1.1.

Ah, thank you, understood. For right of for wrong, when I started new game I went for 1.0 for maximum compatibility of mods!