WinSCP has an integrated simple text editor you can use to edit remote or local text files. If you want to use a more complex editor or edit binary files, you need to set up external editor.

The editor capabilities are similar to those of Notepad (simple editor shipped with Windows):

• Clipboard operations: Copy (Ctrl+C), Cut (Ctrl+X), Paste (Ctrl+V).
• Undo (Ctrl+Z), Redo (Ctrl+Y).
• Find (Ctrl+F), Replace (Ctrl+H), Find next (F3).
• Go to line number (Ctrl+G).
• Save (Ctrl+S).
• Reload (Ctrl+R)

When you save the remote file, WinSCP starts a upload.