Directories, Screen Attributes, System Information, Text Search, Time Mark, Volume Label, Wipe Disk and Wipe File. Version 3.1 This 1986 version adds the Quick UnErase (QU) and Unremove Directory (UD) programs. Version 4.0 Release 4.0 (1987, list $99.95) adds four new programs: Ask, used for batch file programming File Info, add descriptions up to 65 characters long to each file Norton Change Directory, displays a graphic directory tree; change, remove, rename or make directories Norton Integrator, a menu system to tie the utilities together. Previously the utilities were accessed by typing the command name (usually a cryptic 2 character name such as FF) at the DOS prompt. Version 4.0 Advanced Edition This version (list $150), released simultaneously with 4.0 standard edition, is dated 15 May 1987. It adds Speed Disk, a disk defragmenter, and Format Recover. Version 4.5 Advanced Edition Norton Disk Doctor is the major addition in this 1988 release. It also includes Wipedisk; Wipefile, a Batch Enhancer and a sector level disk editor; a system information diagnostic utility and a disk caching program (NCACHE), which is between 10 - 50% faster than Microsoft's SMARTDrive when properly configured. Version 5.0 Release 5.0 adds new features, including Disk Editor, a utility to perform low level formatting on hard disks and changes such as password protection on the more “dangerous” utilities. It also includes a licensed version of the 4DOS replacement for COMMAND.COM called NDOS. This version also allows the choice of “classic” names (such as FF.EXE) or longer names (such as FINDFAST.EXE); these are configurable in the updated version of the Norton Integrator menu system. Version 6.0 Norton Utilities 6.0 supports DOS 5 and Windows 3.1. It includes Windows Program Manager support, but the tools are still DOS-based, so a set of icons were supplied. It includes Norton Disk Doctor, Disk Editor, Disk Tools, Speed Disk, Norton Cache, Disk Monitor, Diskreet, NDisk, System Information, NDOS. The speed of Speed Disk is improved over the previous release. Diskreet supports Data Encryption Standard. System Information now includes more detailed information on installed system. UnErase takes advantage of DOS 5.0's Delete Tracking and Mirror File features to recover data. However, MS-DOS 5.0 adds a new UNDELETE.exe program, licensed from Norton competitor Central Point Software, which takes advantage of the same Delete Sentry control and Deletion-tracking files. (The ERASE command is an alias for the DEL (Delete) command in the DOS command line). Windows