do you mean that you want to add this function to LibreCAD yourself?
In any situation, you don't need to pay to modify LibreCAD.
If you want to release a modified version of LibreCAD, GPL requires releasing of the source code.
There's no developer working on this particular feature, and it makes more sense to try free CNC softwares, as Ries suggested.
isdsi wrote
Okay. Twisk.
Next, can the function be added to librecad master by me or another?
If it is able, I want to add the function from git master.
And, I want to use librecad with my company and my customer.
Is it possible and no need pay ?
I know the license about GPL License. But,
I am the first time with using the open source in my company.
So, I have to check about this.
Thanks your reply.