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Because the HTML view displays only the fact value, the display may look very distorted. Formatting information defined elsewhere in the report may be missing if only the HTML contained in the fact is displayed. A very large font, or text elements that overlap are the result. The program tries to counteract this and to prepare the HTML content in such a way that an optimal display is possible. Strictly speaking, however, the display then no longer corresponds to the actual tagged value. These optimizations can therefore be deactivated. In the menu via the items HTML View -> Remove table formatting and HTML View -> remove span + div formatting.
More Information: Removing HTML and Unicode