This feature allows you to edit the image in an external editor.
- The image is saved to a temporary file PNG;
- Graphical editor called with the first argument - the name of the file;
- While an external editor is running, this application is blocked;
- After closing of the editor, this application checks for changes in a temporary file;
- If there is a changes, then original image will be replaced by temporary file.
The path to the external editor is specified in the Options -> External Editor: