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overhaul was to introduce the concept of a "connection point" between two cells to the ".ext" file format so that it becomes possible to do proper hierarchical R-C extraction. Previously this information was not kept in the .ext file, making it impossible for "extresist" to know what sub-net of a net connects up or down the hierarchy. However, additional changes were made to the extresist code (in the resis/ directory) to add the handling of connections up and down the hierarchy, and to make the code a lot clearer and fix ambiguous variable and subroutine names.