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When you try to close the PDF file, you will be asked to save the file.
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Step 1: Launch LibreOffice on your Ubuntu system and on the welcome screen, click on "Open File" to browse for the file you want to edit.
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When you try to close the PDF file, you will be asked to save the file.
Step 1: Launch LibreOffice on your Ubuntu system and on the welcome screen, click on "Open File" to browse for the file you want to edit.