Foma is a compiler for .lexc and .xfst files, written by Måns Hulden. * [Foma homepage (wiki)|https://code.google.com/p/foma/] * [Download foma|https://code.google.com/p/foma/] Foma basic documentation: Write {{help}} on the foma command line. !!!Graphical presentation of transducers Install graphviz: {{{ sudo port install graphviz }}} Compile the transducer with foma, and save it as a .dot file: {{{ foma[0] load stack exemplefile.fst foma[1] print dot > examplefile.dot foma[1] quit }}} On the command line {{{ dot -T png -O examplefile.dot }}} This command creates a .png file, which can be opened: {{open examplefile.dot.png}} [https://rudifa.wordpress.com/2010/01/10/how-to-run-graphviz-on-the-mac/]