There are some #xslfo examples in the glu examples section. This is mainly a proof of concept that you can implement your own typesetting system in glu (using Lua).
I am not sure if I create more examples, since XSLFO seems to be a somewhat dead technology. This was mainly done for demonstration purposes.
https://github.com/boxesandglue/boxesandglue-examples/tree/main/glu/xslfo




