I had enough to switch between windows to work on external files. So, here is ExternalTools It adds some commands to the File Browser, allowing one to edit in the $EDITOR (for me this is gvim) and another thing for opening the file externally through xdg-open (which kind of opens about anything). Basically, one can extend this to whatever is needed. The only thing is that FileServices initialize needs to be called when a new service is added if you create your own. This is Unix only and requires OSProcess to be loaded (use the ConfigurationBrowser). Gofer it url: 'http://www.smalltalkhub.com/mc/philippeback/HOExtras/main'; package: 'HighOctane-Tools'; load. Screenshot in attach. Doc here: https://gist.github.com/philippeback/8e8f8c6685bebf47f53f Phil