Compare files and folders using external tool in fman
Select two files or folders and run "Compare files" from the Command Palette.
Select one file or folder and run "Save to compare" from the Command Palette. Select another file or folder and run "Compare with saved" from the Command Palette.
When used first time it asks for a comparison tool. Any tool with command line interface which accepts two files or folders can be used. Example of comparison tools: KDiff3, WinMerge, Beyond Compare, or other (see this wiki article for more comparison tools).
Use fman's built-in command for installing plugins.