So, basically, a key, if not the key, component would be the import and output filters for Microsoft Office formats: OOXML (DOCX, PPTX, XLSX mostly); DOC; RTF;

So, basically, a key, if not the key, component would be the import and output filters for Microsoft Office formats: OOXML (DOCX, PPTX, XLSX mostly); DOC; RTF; XLS; PPT. These formats have been reverse-engineered enough to sorta-kinda open them, but there are still lots of bugs. The root of the hierarchy is here: https://bugs.documentfoundation.org/show_bug.cgi?id=MSO-Formats https://bugs.documentfoundation.org/show_bug.cgi?id=MSO-Form... and there are 2128 open bugs... it's true that many are quite esoteric, but some aren't. Want to do your share to help resolve them and rearch perfect MS Office compatibility and replaceability? * Contribute effort/skill: https://whatcanidoforlibreoffice.org/#!/progornoprog/design https://whatcanidoforlibreoffice.org/#!/progornoprog/design * Contribute money: https://www.libreoffice.org/donate/ https://www.libreoffice.org/donate/ * And even just filing compatibility bugs - helps