convert signature coordinates to auto3dem coordinates

Hi,
I am new here and first want to thank you for making available this fantastic software! Since I do not want to invent the wheel again: Does anybody have a script that converts the .plt (or any of the other) coordinate file output by signature into the .bcrd format used by auto3dem? As we also use xmipp, same question: script for conversion into the format used by xmipp?
Thanks a lot, Dieter