I dunno about StarOffice code, but the interchange file format became the Open Document Format (ODF) is almost unchanged. I've worked with it since before ODF w

I dunno about StarOffice code, but the interchange file format became the Open Document Format (ODF) is almost unchanged. I've worked with it since before ODF was formalized. The current version is at most a polishing of structures that have been there well over 20 years. It's also, in extraordinary sharp comparison to the XML structures Microsoft drafted (confusingly called Office Open XML), well-designed and joy to work with.