GNU M4 Development Restarting

Rene' Seindal wrote in to annouce: "I am taking up development of GNU m4 again. It has been dormant for four years now, so we have to create a new team of contributors (of ideas, code and examples) and of testers. I have added some new features, like loadable modules and a more flexible input syntax, but would very much like to know what actual and future users would want to see in GNU m4 to make it server their purposes. What is GNU m4 used for and what can be done to make it do it better?" Rene' also has a GNU M4 Web Site where you can find everything you need on the latest development initiatives.