Not an open format. Microsoft just pretends it is. But it isn’t. They subverted the whole system, didn’t even hide it, just to push their impossible to implement format through.
So now it still has to be reverse engineered, and they get to call it “open”.
*don’t use docx in the first place
What’s wrong with docx
Proprietary format that only “works” with one software
Docx is a an open format. Word just does some things weird
Not an open format. Microsoft just pretends it is. But it isn’t. They subverted the whole system, didn’t even hide it, just to push their impossible to implement format through.
So now it still has to be reverse engineered, and they get to call it “open”.