Vanilla S

With S no built-in mechanism is available, but there are two common ways of obtaining command recall for interactive sessions.

• Run the S session under emacs using S-mode, a major mode designed to support S. This is probably more convenient than even the inbuilt editor of S-PLUS in the long term, however it does require a good deal of preliminary effort for persons not familiar with the emacs editor. It also often requires a dedicated workstation with a good deal of memory and other resources.

• Run the S session under some front end processor, such as the public domain fep program, available from the public sources archives. This provides essentially the same service as the inbuilt S-PLUS editor, but with somewhat more overhead, (but a great deal less overhead than emacs requires.)