diff --git a/runtime/syntax/monk.vim b/runtime/syntax/monk.vim
new file mode 100644
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--- /dev/null
+++ b/runtime/syntax/monk.vim
@@ -0,0 +1,228 @@
+" Vim syntax file
+" Language: Monk (See-Beyond Technologies)
+" Maintainer: Mike Litherland <litherm@ccf.org>
+" Last Change: March 6, 2002
+
+" This syntax file is good enough for my needs, but others
+" may desire more features.  Suggestions and bug reports
+" are solicited by the author (above).
+
+" Originally based on the Scheme syntax file by:
+
+" Maintainer:	Dirk van Deun <dvandeun@poboxes.com>
+" Last Change:	April 30, 1998
+
+" In fact it's almost identical. :)
+
+" The original author's notes:
+" This script incorrectly recognizes some junk input as numerals:
+" parsing the complete system of Scheme numerals using the pattern
+" language is practically impossible: I did a lax approximation.
+
+" Initializing:
+
+" For version 5.x: Clear all syntax items
+" For version 6.x: Quit when a syntax file was already loaded
+if version < 600
+  syntax clear
+elseif exists("b:current_syntax")
+  finish
+endif
+
+syn case ignore
+
+" Fascist highlighting: everything that doesn't fit the rules is an error...
+
+syn match	monkError	oneline    ![^ \t()";]*!
+syn match	monkError	oneline    ")"
+
+" Quoted and backquoted stuff
+
+syn region monkQuoted matchgroup=Delimiter start="['`]" end=![ \t()";]!me=e-1 contains=ALLBUT,monkStruc,monkSyntax,monkFunc
+
+syn region monkQuoted matchgroup=Delimiter start="['`](" matchgroup=Delimiter end=")" contains=ALLBUT,monkStruc,monkSyntax,monkFunc
+syn region monkQuoted matchgroup=Delimiter start="['`]#(" matchgroup=Delimiter end=")" contains=ALLBUT,monkStruc,monkSyntax,monkFunc
+
+syn region monkStrucRestricted matchgroup=Delimiter start="(" matchgroup=Delimiter end=")" contains=ALLBUT,monkStruc,monkSyntax,monkFunc
+syn region monkStrucRestricted matchgroup=Delimiter start="#(" matchgroup=Delimiter end=")" contains=ALLBUT,monkStruc,monkSyntax,monkFunc
+
+syn region monkUnquote matchgroup=Delimiter start="," end=![ \t()";]!me=e-1 contains=ALLBUT,monkStruc,monkSyntax,monkFunc
+syn region monkUnquote matchgroup=Delimiter start=",@" end=![ \t()";]!me=e-1 contains=ALLBUT,monkStruc,monkSyntax,monkFunc
+
+syn region monkUnquote matchgroup=Delimiter start=",(" end=")" contains=ALLBUT,monkStruc,monkSyntax,monkFunc
+syn region monkUnquote matchgroup=Delimiter start=",@(" end=")" contains=ALLBUT,monkStruc,monkSyntax,monkFunc
+
+syn region monkUnquote matchgroup=Delimiter start=",#(" end=")" contains=ALLBUT,monkStruc,monkSyntax,monkFunc
+syn region monkUnquote matchgroup=Delimiter start=",@#(" end=")" contains=ALLBUT,monkStruc,monkSyntax,monkFunc
+
+" R5RS Scheme Functions and Syntax:
+
+if version < 600
+  set iskeyword=33,35-39,42-58,60-90,94,95,97-122,126,_
+else
+  setlocal iskeyword=33,35-39,42-58,60-90,94,95,97-122,126,_
+endif
+
+syn keyword monkSyntax lambda and or if cond case define let let* letrec
+syn keyword monkSyntax begin do delay set! else =>
+syn keyword monkSyntax quote quasiquote unquote unquote-splicing
+syn keyword monkSyntax define-syntax let-syntax letrec-syntax syntax-rules
+
+syn keyword monkFunc not boolean? eq? eqv? equal? pair? cons car cdr set-car!
+syn keyword monkFunc set-cdr! caar cadr cdar cddr caaar caadr cadar caddr
+syn keyword monkFunc cdaar cdadr cddar cdddr caaaar caaadr caadar caaddr
+syn keyword monkFunc cadaar cadadr caddar cadddr cdaaar cdaadr cdadar cdaddr
+syn keyword monkFunc cddaar cddadr cdddar cddddr null? list? list length
+syn keyword monkFunc append reverse list-ref memq memv member assq assv assoc
+syn keyword monkFunc symbol? symbol->string string->symbol number? complex?
+syn keyword monkFunc real? rational? integer? exact? inexact? = < > <= >=
+syn keyword monkFunc zero? positive? negative? odd? even? max min + * - / abs
+syn keyword monkFunc quotient remainder modulo gcd lcm numerator denominator
+syn keyword monkFunc floor ceiling truncate round rationalize exp log sin cos
+syn keyword monkFunc tan asin acos atan sqrt expt make-rectangular make-polar
+syn keyword monkFunc real-part imag-part magnitude angle exact->inexact
+syn keyword monkFunc inexact->exact number->string string->number char=?
+syn keyword monkFunc char-ci=? char<? char-ci<? char>? char-ci>? char<=?
+syn keyword monkFunc char-ci<=? char>=? char-ci>=? char-alphabetic? char?
+syn keyword monkFunc char-numeric? char-whitespace? char-upper-case?
+syn keyword monkFunc char-lower-case?
+syn keyword monkFunc char->integer integer->char char-upcase char-downcase
+syn keyword monkFunc string? make-string string string-length string-ref
+syn keyword monkFunc string-set! string=? string-ci=? string<? string-ci<?
+syn keyword monkFunc string>? string-ci>? string<=? string-ci<=? string>=?
+syn keyword monkFunc string-ci>=? substring string-append vector? make-vector
+syn keyword monkFunc vector vector-length vector-ref vector-set! procedure?
+syn keyword monkFunc apply map for-each call-with-current-continuation
+syn keyword monkFunc call-with-input-file call-with-output-file input-port?
+syn keyword monkFunc output-port? current-input-port current-output-port
+syn keyword monkFunc open-input-file open-output-file close-input-port
+syn keyword monkFunc close-output-port eof-object? read read-char peek-char
+syn keyword monkFunc write display newline write-char call/cc
+syn keyword monkFunc list-tail string->list list->string string-copy
+syn keyword monkFunc string-fill! vector->list list->vector vector-fill!
+syn keyword monkFunc force with-input-from-file with-output-to-file
+syn keyword monkFunc char-ready? load transcript-on transcript-off eval
+syn keyword monkFunc dynamic-wind port? values call-with-values
+syn keyword monkFunc monk-report-environment null-environment
+syn keyword monkFunc interaction-environment
+
+" Keywords specific to STC's implementation
+
+syn keyword monkFunc $event-clear $event-parse $event->string $make-event-map
+syn keyword monkFunc $resolve-event-definition change-pattern copy copy-strip
+syn keyword monkFunc count-data-children count-map-children count-rep data-map
+syn keyword monkFunc duplicate duplicate-strip file-check file-lookup get
+syn keyword monkFunc insert list-lookup node-has-data? not-verify path?
+syn keyword monkFunc path-defined-as-repeating? path-nodeclear path-nodedepth
+syn keyword monkFunc path-nodename path-nodeparentname path->string path-valid?
+syn keyword monkFunc regex string->path timestamp uniqueid verify
+
+" Keywords from the Monk function library (from e*Gate 4.1 programmers ref)
+syn keyword monkFunc allcap? capitalize char-punctuation? char-substitute
+syn keyword monkFunc char-to-char conv count-used-children degc->degf
+syn keyword monkFunc diff-two-dates display-error empty-string? fail_id
+syn keyword monkFunc fail_id_if fail_translation fail_translation_if
+syn keyword monkFunc find-get-after find-get-before get-timestamp julian-date?
+syn keyword monkFunc julian->standard leap-year? map-string not-empty-string?
+syn keyword monkFunc standard-date? standard->julian string-begins-with?
+syn keyword monkFunc string-contains? string-ends-with? string-search-from-left
+syn keyword monkFunc string-search-from-right string->ssn strip-punct
+syn keyword monkFunc strip-string substring=? symbol-table-get symbol-table-put
+syn keyword monkFunc trim-string-left trim-string-right valid-decimal?
+syn keyword monkFunc valid-integer? verify-type
+
+" Writing out the complete description of Scheme numerals without
+" using variables is a day's work for a trained secretary...
+" This is a useful lax approximation:
+
+syn match	monkNumber	oneline    "[-#+0-9.][-#+/0-9a-f@i.boxesfdl]*"
+syn match	monkError	oneline    ![-#+0-9.][-#+/0-9a-f@i.boxesfdl]*[^-#+/0-9a-f@i.boxesfdl \t()";][^ \t()";]*!
+
+syn match	monkOther	oneline    ![+-][ \t()";]!me=e-1
+syn match	monkOther	oneline    ![+-]$!
+" ... so that a single + or -, inside a quoted context, would not be
+" interpreted as a number (outside such contexts, it's a monkFunc)
+
+syn match	monkDelimiter	oneline    !\.[ \t()";]!me=e-1
+syn match	monkDelimiter	oneline    !\.$!
+" ... and a single dot is not a number but a delimiter
+
+" Simple literals:
+
+syn match	monkBoolean	oneline    "#[tf]"
+syn match	monkError	oneline    !#[tf][^ \t()";]\+!
+
+syn match	monkChar	oneline    "#\\"
+syn match	monkChar	oneline    "#\\."
+syn match	monkError	oneline    !#\\.[^ \t()";]\+!
+syn match	monkChar	oneline    "#\\space"
+syn match	monkError	oneline    !#\\space[^ \t()";]\+!
+syn match	monkChar	oneline    "#\\newline"
+syn match	monkError	oneline    !#\\newline[^ \t()";]\+!
+
+" This keeps all other stuff unhighlighted, except *stuff* and <stuff>:
+
+syn match	monkOther	oneline    ,[a-z!$%&*/:<=>?^_~][-a-z!$%&*/:<=>?^_~0-9+.@]*,
+syn match	monkError	oneline    ,[a-z!$%&*/:<=>?^_~][-a-z!$%&*/:<=>?^_~0-9+.@]*[^-a-z!$%&*/:<=>?^_~0-9+.@ \t()";]\+[^ \t()";]*,
+
+syn match	monkOther	oneline    "\.\.\."
+syn match	monkError	oneline    !\.\.\.[^ \t()";]\+!
+" ... a special identifier
+
+syn match	monkConstant	oneline    ,\*[-a-z!$%&*/:<=>?^_~0-9+.@]*\*[ \t()";],me=e-1
+syn match	monkConstant	oneline    ,\*[-a-z!$%&*/:<=>?^_~0-9+.@]*\*$,
+syn match	monkError	oneline    ,\*[-a-z!$%&*/:<=>?^_~0-9+.@]*\*[^-a-z!$%&*/:<=>?^_~0-9+.@ \t()";]\+[^ \t()";]*,
+
+syn match	monkConstant	oneline    ,<[-a-z!$%&*/:<=>?^_~0-9+.@]*>[ \t()";],me=e-1
+syn match	monkConstant	oneline    ,<[-a-z!$%&*/:<=>?^_~0-9+.@]*>$,
+syn match	monkError	oneline    ,<[-a-z!$%&*/:<=>?^_~0-9+.@]*>[^-a-z!$%&*/:<=>?^_~0-9+.@ \t()";]\+[^ \t()";]*,
+
+" Monk input and output structures
+syn match	monkSyntax	oneline    "\(\~input\|\[I\]->\)[^ \t]*"
+syn match	monkFunc	oneline    "\(\~output\|\[O\]->\)[^ \t]*"
+
+" Non-quoted lists, and strings:
+
+syn region monkStruc matchgroup=Delimiter start="(" matchgroup=Delimiter end=")" contains=ALL
+syn region monkStruc matchgroup=Delimiter start="#(" matchgroup=Delimiter end=")" contains=ALL
+
+syn region	monkString	start=+"+  skip=+\\[\\"]+ end=+"+
+
+" Comments:
+
+syn match	monkComment	";.*$"
+
+" Synchronization and the wrapping up...
+
+syn sync match matchPlace grouphere NONE "^[^ \t]"
+" ... i.e. synchronize on a line that starts at the left margin
+
+" Define the default highlighting.
+" For version 5.7 and earlier: only when not done already
+" For version 5.8 and later: only when an item doesn't have highlighting yet
+if version >= 508 || !exists("did_monk_syntax_inits")
+  if version < 508
+    let did_monk_syntax_inits = 1
+    command -nargs=+ HiLink hi link <args>
+  else
+    command -nargs=+ HiLink hi def link <args>
+  endif
+
+  HiLink monkSyntax		Statement
+  HiLink monkFunc		Function
+
+  HiLink monkString		String
+  HiLink monkChar		Character
+  HiLink monkNumber		Number
+  HiLink monkBoolean		Boolean
+
+  HiLink monkDelimiter	Delimiter
+  HiLink monkConstant	Constant
+
+  HiLink monkComment		Comment
+  HiLink monkError		Error
+
+  delcommand HiLink
+endif
+
+let b:current_syntax = "monk"