an open source PCB editor for Microsoft Windows, released under the GNU General Public License.

How to add via?

To add a via to the top of the road segment, you need to select the top and press the 'F' key. If the project options have several different sizes of vias, pressing the 'F' again will set the next size. To remove a via from the top of the road segment, click on 'U'. To add a free via hole, add a part that contains a single pin with via hole parameters. Leave the Package attribute field empty.