Andrey, I'm new here and finding my way with QCAD and dxf2gcode... I've used advice from else where, used ! instead of : then used my favorite text editor and replace all feature. However, the editor isn't required - you simply need to go to the configuration, select Automatic Tool Config and change the separator identifier from : to ! Hope this helps. regards, Colin EDIT: There's a better way!!
Andrey, I'm new here and finding my way with QCAD and dxf2gcode... I've used advice from else where, used ! instead of : then used my favorite text editor and replace all feature. Whilst I've not tested the gcode yet, it appears that this is making the levels act correctly. Reading around the topic, QCAD is acting correctly, the : isn't a valid DXF charater in level names. Hope this helps. regards, Colin