Asks the snip to try to release itself from its owner. If the snip is not owned or the release is successful, then #t is returned. Otherwise, #f is returned and the snip remains owned. See also is-owned?.
Use this method for moving a snip from one buffer to another. This method notifies the snip's owning buffer that someone else really wants control of the snip. It is not necessary to use this method for "cleaning up" a snip when it is deleted from a buffer.
Requests a low-level release from the snip's owning administrator.