Here's some (working, but rough :) ) perl to read and translate figures.
SFNParse.pm - translates instruction lines.
SFNFile.pm - reads .sfn files.
figures.sfn - a bunch of assorted figures - most of them working :)
show_figures.pl A command line tool to display and translate (to English at the moment, but other languages may follow) figures. show_figures.pl -h for more info.
SFNParseIT.pm - an alternative 'plugin' for showfigures.pl - translates instruction lines into extremely rough Italian, a small 'proof of concept' :-)