If your Job is made of numerous subJobs, you can collapse them to improve the readability of the whole Job. The minus ([-]) and plus ([+]) signs on the top right-hand corner of the subJob allow you to collapse and restore the complete subJob.
Click the minus sign ([-]) to collapse the subJob. When reduced, only the first component of the subJob is displayed.
Click the plus sign ([+]) to restore your subJob.