EXTRACT {(channelno{options})}{inputlist}
EXTRACT RECORD{(channelno{options})}{strvar}
The EXTRACT, FIND, and INPUT verbs use the same syntax as the READ and READ RECORD verbs. See the READ verb for additional information.
Note that only records that have data can be locked. EXTRACTing a record that has just a key and no data (records in Sort files and records in Direct and Mkeyed files that have a record length set to zero) will not cause the record to be locked. The structure of the key chain makes it possible to lock just one key, so locking must occur on the data portion of the record.