To identify the differences between subcircuits in a hierarchical design (such as channel number!!) I tried to use a title block. No matter what is placed on the schematic page, all blocks get the same data. The only exception appears to be the "renumber" function that allows you to "lock" the REFDES. That function is poor too, because to get REFDES numbers that are in a configuration compatible with the subcircuits, they have to be entered, one at a time, by hand --- painful.
