I’m looking for CAD software on Linux, and I came across SagCAD. The only value I derived from my interaction with the software was the above dialogue box. The software is horribly unintuitive and crashed when I tried to open some of my existing dxf files.
It took me 15 minutes before I figured out how to draw a line, and I’m usually quite good at unravelling mystifying user interfaces.
In conclusion — leave SagCAD alone. Use QCAD instead.
Edit: The manual is in Japanese, but they’ve helpfully provided a machine-translated English version. Hilarious. Here is an extract to whet your appetite:
< Note > The active layer (the current layer) it inserts the data which is inserted. Because of that, it is becoming one layer it becomes the figure in the layer of here and there, confused.
Edit again: I promise not to edit this post again, but this is too good to pass up. The original message asking “does it save” has been superseded by this from the SagCAD manual:
The Waffle Group 
Excellent – I think you should alert engrish.com.
I think we can all take :”When it retains, it becomes the sky” with us in daily life. An important message for us all.
Quinn: engrish.com have been duly informed
Jenbug: Quite right. I know I have.