New User Interface […]
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New User Interface
DOS 4.0 was part of the push towards OS/2 and graphical user interfaces. The command line interface was officially obsoleted by the new full-screen DOS Shell, compliant with the new CUA (Common User Access) guidelines and somewhat similar to the (upcoming) OS/2 File Manager. The DOS Shell sported menus, dialogs, push buttons, scroll bars, and on-line help.
The DOS Shell was customizable and users could add their own menu entries to easily launch arbitrary programs and utilities. The Shell could be controlled either by a mouse or by a keyboard. There was naturally an easy way to “shell out” to the traditional DOS command prompt.
A File System utility was a prominent part of the DOS Shell. This presented the directory structure of a disk in the classic tree form, allowing easy navigation. The File System part of the DOS Shell was very similar to the File System applet in OS/2’s Presentation Manager (released a few months after DOS 4.0).
The DOS Shell was met with a mixed reception. Some users liked it, as it made the PC more accessible to beginners. Others complained that the DOS Shell was incompatible with popular TSRs—often because the TSRs could not correctly handle applications running in graphics mode. The solution was forcing the DOS Shell to use text mode.
The DOS Shell itself was of course entirely optional and users who found no need for it were not forced to use the shell.