info-xref-check-all-custom
info-xref-check-all-custom is an interactive autoloaded compiled Lisp function in `info-xref.el
'.
(info-xref-check-all-custom)
Check info references in all customize groups and variables.
Info references can be in `custom-manual' or `info-link' entries
of the `custom-links' for a variable.
Any `custom-load' autoloads in variables are loaded in order to
get full link information. This will be a lot of Lisp packages
and can take a long time.