Closing a Picklock - Picklock style knives have a small locking mechanism on the top that can be released by lifting it with your fingernail. See picture below:

 

Closing a Linerlock Knife
To release the lock the user must press the lockbar back toward the handle side from whence it came to allow the blade to close. In the closed position the lockbar rests alongside the handle and the blade.
See picture below:

 

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