after all – we've discovered a number of distinct examples that fall outside the usual bounds. Our list even includes a few true outsiders, independent operating systems built from the ground up ...

Originally most interfaces were CLIs, and they still exist within modern operating systems, for example the command prompt app in Windows, and Terminal in OS X. Multitasking means to be able to ...

Originally, most interfaces were CLIs. They still exist within modern operating systems, for example the command prompt app in Windows, and Terminal in macOS. Line 2 lists the contents of the ...