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NAME

       s2ci - Scheme interpreter

SYNTAX

       s2ci [ option ]

DESCRIPTION

       The  s2ci  command (previously known as sci) invokes a Scheme interpreter.  The language accepted by this
       interpreter is that defined in the essential portions of the Revised4 Report on the Algorithmic  Language
       Scheme, with minor constraints and some additions.  The Scheme interpreter is written in Scheme which has
       then been compiled using the Scheme-to-C compiler, s2cc.

OPTIONS

       These options are accepted by s2ci.

       -e             Echo text read from the standard input file on the standard output file.

       -emacs         Scheme interpreter is controlled by GNU emacs.

       -nh            Do not print the interpreter version header on the standard output file.

       -np            Do not prompt for input from the standard input file on the standard output file.

       -q             Do not print the result of each expression evaluation.

       -scgc   statflag
                      Enables garbage collection statistics.  If set to 1, then  garbage  collection  statistics
                      will be printed.  The default is 0, that will result in no statistics.

       -sch  heap     Specifies  the initial size of the heap in megabytes.  The default heap size is 4 MB.  The
                      maximum heap size allowed is 1000 MB.

       -scl percent   Specifies the percent of the heap allocated after a generational garbage  collection  that
                      will force a full collection.  The default is 40%.

       -scm  main     Specifies the function that should be used instead of the predefined "main".  The function
                      name must be entered in the correct case, i.e. letters typically upshifted.

       -scmh  heap    Specifies the maximum heap size in megabytes.  The default is five times the initial  size
                      of the heap.

ENVIRONMENT VARIABLES

       The  items  controlled  by -sc.. flags can also be controlled by environment variables.  If both the flag
       and the environment variable are provided, then the flag's value will be used.

       SCGCINFO       Controls the reporting of garbage collection statistics to the standard  error  file.   If
                      set  to  1,  then garbage collection statistics will be printed.  The default setting is 0
                      that will not print the statistics.

       SCHEAP         Specifies the initial size of the heap in megabytes.  The default heap size is 4 MB.   The
                      maximum heap size allowed is 1000 MB.

       SCLIMIT        Specifies  the  percent of the heap allocated after a generational garbage collection that
                      will force a full collection.  The default is 40%.

       SCMAXHEAP      Specifies the maximum size of the heap in megabytes.  The default value is five times  the
                      initial heap size.

FILES

       The  interpreter  is  one  a.out  file with the name s2ci.  All files associated with the interpreter are
       found in the directory .../schemetoc/scrt.

SEE ALSO

       Harold Abelson and Gerald Jay Sussman with  Julie  Sussman,  Structure  and  Interpretation  of  Computer
       Programs, The MIT Press.

       William  Clinger  and  Jonathan  Rees (Editors), Revised4 Report on the Algorithmic Language Scheme, LISP
       Pointers, Volume IV, Number 3, July-September 1991.  PostScript  for  this  report  is  included  in  the
       software distribution.

       Jerry  D.  Smith,  An Introduction to Scheme, Prentice Hall, Inc.  Chapter notes for using this text with
       Scheme->C are included in the software distribution.

       R. Kent Dybvig, The SCHEME Programming Language, Prentice Hall, Inc.

       Daniel P. Friedman and Matthias Felleisen, The Little LISPer, MIT Press.

       Joel F. Bartlett, Scheme->C  a Portable Scheme-to-C Compiler, WRL Research Report 89/1.

       Additional documentation is included in the software distribution.

       s2cc(1)

QUESTIONS, COMMENTS, AND COMPLAINTS

       http://alioth.debian.org/projects/scheme2c/

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