IVX7 is a tool for reading, modifying, and writing Yaesu VX-7[R] configurations.
I used this website for all reverse engineering information.
make INSTALL=1 ivx7.release
Creating a new clone file using a template and pgm scripts:
ivx7 load template.vx7 \
script pgmscripts/defaults.pgm \
script pgmscripts/simplex.pgm \
script pgmscripts/southbay_rpt.pgm \
script pgmscripts/carla.pgm \
script pgmscripts/frs_murs.pgm \
save new.vx7
Getting info about a clone file:
ivx7 load new.vx7 info