Posted by Rallaz on Jan 19, 2012; 7:26pm
URL: https://forum.librecad.org/Where-I-can-find-LFF-specification-arcs-tp5158044p5158663.html

In this page I write a basic explanation
https://github.com/Rallaz/LibreCAD/wiki/lff-definition

If you have further questions, feel free to ask or to improve the explanation page ;-)

Cheers,
Rallaz