I’m no stranger to hierarchical schematics and have used them numerous times using the hierarchical sheet tool. I just opened a project I did some months ago, however, and find that it has a hierarchical structure, i.e. I can pop up the hierarchical navigator and it shows “Root” and the other sheets at a level below, but the schematic contains absolutely no hierarchical sheet symbols anywhere. How did I do this???
I’m not looking for a tutorial on how to use hierarchical sheets “properly”, just how is it possible that I created a multi-sheet schematic without hierarchical sheet symbols? I’m pretty sure I didn’t use File->Append Schematic Sheet Content, because that would have required designing each sheet as a separate project, which I didn’t do.