In the "Project Settings..." I can check "Save all files before external application start".
I prefer to run external applications from "Tool Panel | Favourites | Tools" because I use most of them in multiple projects or even independent of any project. In this case, only the *current* file is saved when I start the application. I would like to have the option to save all files. I think to remember that it actually worked that way in previous versions (4.x?). -- <https://forum.pspad.com/read.php?2,73792,73792> PSPad freeware editor https://www.pspad.com
