Rules glossary
↑ Parent rule: 709.5 Some split cards are permanent cards with a single shared ty…
709.5c “Left half unlocked” and “right half unlocked” are designations that a permanent on the battlefield can have. Together, they are called the unlocked designations. A particular half of a permanent is said to be “unlocked” if it has the appropriate unlocked designation. Otherwise, that half is said to be “locked.”
No sub-rules.