Now, going back to that FAQ link <http://puredata.info/docs/faq/how-do-i-install-externals-and-help-files>, I guess we can replace it with something more up to date, and maybe include a section "how install via Pd (deken)".Thus we'd have a general way of installing externals that are not available in deken, but also how to use and manage deken.
but I wonder if there's a way for Pd to allow us to go there. There certainly is, but seems it won't be too simple…