Microsoft MS-DOS Manager is a file manager shell that OEMs provided to be used with MS-DOS 3.X systems. It was bundled with OEM hardware from companies such as Zenith. This software didn’t last long, as it was replaced and became the DOS Shell on MS-DOS 4.X.
Some of the features included is mouse support, drop-down windows similar to later Microsoft products, split screen file list, linking file types with other software that is installed and add programs quickly to a drop-down menu specifically for programs.
[PCjs Machine "ibm5170"]
Waiting for machine "ibm5170" to load....
Volume in drive A has no label Directory of A:\ MANAGER EXE 72846 6-23-87 7:44a MANAGER HLP 26247 6-04-87 9:06a MANAGER INI 120 8-10-88 6:19p 3 file(s) 99213 bytes 261120 bytes free