I wanted to look up the hof:until[1] syntax in the wiki. It tells me that it has been replaced with fn:iterate-while. Well, I hope, when the dust settles, there is something similar to this in the spec, but it looks like it may not be iterate-while .
Today a user of the current BaseX release(10.7) is going to struggle to find what hof:until does and wont find any fn:iterate-while . I think deprecating functions and moving forward is great. I do like to see what 4.0 might bring with the BaseX 11 betas but if I catch myself writing anything substantial I stop. The ground is unstable.
I think the wiki should center on the functionality of the current release, with just teasers about the future. Christian, I think you hinted that the future may hold some documentation API built into the product, or did I imagine that?
/Andy
[1] https://docs.basex.org/wiki/Higher-Order_Functions_Module,