They reversed the nines, for instance, then spent the next few summers chopping away at selected holes with shovels and pickaxes, under the direction ... of detailed diagrams based upon our ...

your_file.gliffy. This can be overridden using the -o flag. Converted Gliffy diagrams should also work in the online version of draw.io. In draw.io, you can import a diagram by simply opening the file ...