show changes, edit

There must be a simple way to change the colour of the font, the letters, of those words changed in Editing.
How CAN it be impossible to show the changes as you edit a document?

If this is so, the programme is simply quite useless.

What program are you talking about? Because it can’t be LibreOffice: it of course have track changes mode, and you of course realize that if you don’t know something, it’s not a reason to blame program in your ignorance?

French sense of humour?