joplin/readme/apps/external_text_editor.md

External text editor

Joplin notes can be opened and edited using an external editor of your choice. It can be a simple text editor like Notepad++ or Sublime Text or an actual Markdown editor like Typora. In that case, images will also be displayed within the editor. To open the note in an external editor, click on the icon in the toolbar or press Ctrl+E (or Cmd+E). Your default text editor will be used to open the note. If needed, you can also specify the editor directly in the General Options, under "Text editor command".