  * Languages Supported:

       * S dialects (S 3/4, S-PLUS 3.x/4.x/5.x/6.x, and R)

       * SAS

       * BUGS

       * Stata

       * XLispStat including Arc and ViSta

  * Editing source code (S, XLispStat, SAS, BUGS)

       * Syntactic indentation and highlighting of source code

       * Partial evaluation of code

       * Loading and error-checking of code

       * Source code revision maintenance

       * Batch execution (SAS, BUGS)

  * Interacting with the process (S, XLispStat, SAS)

       * Command-line editing

       * Searchable Command history

       * Command-line completion of S object names and file names

       * Quick access to object lists and search lists

       * Transcript recording

       * Interface to the help system

  * Transcript manipulation (S3, S+3, S4, R, XLispStat)

       * Recording and saving transcript files

       * Manipulating and editing saved transcripts

       * Re-evaluating commands from transcript files

  * Help File Editing (R)

       * Syntactic indentation and highlighting of source code.

       * Sending Examples to running ESS process.

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