Very good and useful! I have two remarks: - It would be better to use a fixed size font (e.g. courier). If you make some hex dump or anything, where you should see a change, it's better. - A copy to clipboard button.
Yes, copy the plugin .dll file to the UCCNC/Plugins folder, run the UCCNC and enable the plugin in the plugins configuration menu and restart the UCCNC.