If you want to translate HTML documents, you cannot load the file as a normal Word document through the Word command File | Open. If you do this, the html document will be transformed into a Word document (or, if FrontPage is installed on your computer, the document will be opened in FrontPage). Of course, you can also translate the converted document. However, if the final version is supposed to have the same HTML code as the original document, this is not recommended, because Word produces a very complicated HTML code (which is optimized to make HTML pages look like Word documents).
For this reason, MetaTexis includes a separate open file command which opens HTML documents as text documents. To open an HTML document as a text document, execute the menu command: MetaTexis | File | Open and select an HTML file. Then, launch the Start Assistant and select HTML as the document type.
Note: To translate tagged documents, you should at least know the meaning of the most important tags. In any case, you should not delete any tag without knowing exactly what consequences this will have.