### Problem

The differences between versions (like in the project repository or in the wiki) are only marked by colors and font formatting. This is not perceivable with a screen reader, so that blind users cannot recognize the difference.


**Note**: Select a project -\> Project repository -\> Select a revision; Select a Project -\> Wiki -\> More -\> History -\> View differences)

### Begin of the insertionRecommendationEnd of the insertion Begin of the deletion RecommandationEnd of the deletion

- Version differences should not only be shown by formatting the font.
- Therefore invisible hints should be added (like ‘Begin deleted text’, ‘End deleted text’ etc.)