```{index} single: unlock_ref_keys; Hash::Util function ``` ```{index} single: Hash::Util::unlock_ref_keys; Perl function ``` # unlock_ref_keys Hash-reference variant of `unlock_keys`. ## Synopsis ```perl unlock_ref_keys($href); ``` Lifts the keyset restriction on the referenced hash. See `unlock_keys` for the full story on placeholders and values that remain locked.