You can make use of last reference job (and data sets) whenever you issue a series of commands against the same job (and data sets). If you omit the name of the job, BIM-EDIT/XP will assume you wish to process the job (and data sets) you last referenced.
For example, the following commands will end the current JobList session and delete the job associated with the session:
=> end
=> pp
Note that the job name was not specified for the JobDelete command (pp). The SessionClose command (end) set last reference job (and data sets), so the JobDelete command deletes the job associated with the just ended session.