Gwennel is a free WYSIWYG & WYSIWYM (what you see is what you get) online editor for Windows using natively the Open Document Format (ODF). It is not exactly a word processor, rather it's more of a multimedia note taking application to edit digital documents with the availability of pen and paper. It requires only a standard word processing software such as Word or Publisher to open files. You may also use a mouse to take action on the selected text.
In order to successfully use the app, you need to have a Windows computer with a CD-ROM drive or hard drive in order to properly install the software. It is normally available through the program installation file which is located inside the program. If you don't have a Windows computer or a CD-ROM drive, you can download the latest version of the app from its official website for free. The latest version is v5.2 which is available at the link below.
Another important tip that will help you with your Gwennel editing is to be aware of the size of the document that you want to edit. If you need a very large file size, you will have to use one of the tools available in the program like the "Binary Search-O" or the "Wide View". The "Binary Search-O" allows you to search a large number of documents and displays the results exactly where they are located in your computer without having to open each one individually. Conversely, the wide view function allows you to open a file location by clicking on the globe icon. The last but not least, make sure you don't forget to save any changes you have made as a follow up to completing your complete system tuneup app.