ISPF/VSAM Utility provides on-line access (through ISPF) to the most often used VSAM functions normally done with IDCAMS batch processing: allocating (defining), renaming, copying, and deleting VSAM files. It was designed primarily for use by applications and systems programmers. IVU allows editing and browsing of VSAM and NON-VSAM files with no LRECL or file size restrictions.