Partially Completed Nexus Slices

We can know so which parts (slices) of a signal affect the register. However, I still cannot show which part of the
register they affect, that comes next. The main issue is that I'm approaching this like a assignment statement, but the
nexus is not set up as an assignment. Instead, it is set up as combinational logic should be, gates and wires. So saying
which part is on the lval for the assignment doesn't make so much sense in a nexus.