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clarify phrasing and small edits from feedback

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@ -31,7 +31,7 @@ Metadata Cleaner shows the metadata it detects, but "it doesn't mean that a file
To use the Metadata Cleaner, first add a file. When you click it, the current metadata is displayed. Select the file, then select **Clean**. You can verify that the metadata has been removed by re-adding the cleaned file and viewing its metadata.
When you clean a PDF file, it is converted to images, so the quality is downgraded and you cannot select the text in it. If you want to retain this ability, there is a *lightweight* cleaning mode that cleans only the superficial metadata of your file, but not the metadata of embedded resources (such as images in the PDF). Embedded resources with metadata can be avoided by using Metadata Cleaner on the images before importing them into the layout software, and by using layout software on Tails or Qubes-Whonix such as Scribus that are generic for those operating systems. You can enable "lightweight cleaning" in the Metadata Cleaner settings.
When you clean a PDF file, it is converted to images, so the quality is downgraded and you cannot select the text in it. If you want to retain this ability, there is a *lightweight* cleaning mode that cleans only the superficial metadata of your file, but not the metadata of "embedded resources" (such as images in the PDF). If you are creating a PDF, use Metadata Cleaner on any images before importing them into the layout software, and use layout software on Tails or Qubes-Whonix such as Scribus that are generic for those operating systems. You can enable "lightweight cleaning" in the Metadata Cleaner settings.
Note the limitations of Metadata Cleaner: "mat2 only removes metadata from your files, it does not anonymise their content, nor can it handle watermarking, steganography, or any too custom metadata field/system. If you really want to be anonymous, use file formats that do not contain any metadata, or better: use plain-text."