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Today I learned that Word files are just zipped XML and can be edited directly in a text editor if you change the extension from .docx to .zip.

• hyakosm 4y ago
  It’s the case with .docx modern files. Older .doc files were binary (memory dump).
• fny 4y ago
  This is also true of modern PowerPoint files and Excel files. Also some others: open office formats, apk, ipa, jar, and epub.