I just started playing around with KiCad, and still try to get my head around proper hirarchy management.
Let's say I want to create a simple and-gate with transistors, but need to use this gate multiple times in a schematic.
Is there a way to define the and-gate schematic once, and reusing it multiple times?
Ideally including changing of referenced sub-schematics. e.g. if I spot an error in a gate, I can change it once, and it gets fixed everywhere it was used.
It's somewhat like components, but actually using a circut instead of just a single component.
I know I can copy&paste a sub-sheet, but that copies annotations as well and removes the possibility to change a whole schematic later on