lepton-sch2pcb is a bridge between lepton-schematic and PCB layout programs
such as pcb or pcb-rnd. It is Lepton’s successor
to gsch2pcb in the geda-gaf project. The program is
used to forward annotate changes in schematics to PCB layout programs
so that the schematics are always in sync with the layout created from
them. Additions and deletions of elements in the design layout as
well as changes in their interconnections are automatically driven by
changes in the design schematics.