diff --git a/runtime/syntax/clean.vim b/runtime/syntax/clean.vim
new file mode 100644
index 0000000..233ecbd
--- /dev/null
+++ b/runtime/syntax/clean.vim
@@ -0,0 +1,94 @@
+" Vim syntax file
+" Language:		Clean
+" Author:		Pieter van Engelen <pietere@sci.kun.nl>
+" Co-Author:	Arthur van Leeuwen <arthurvl@sci.kun.nl>
+" Last Change:	Fri Sep 29 11:35:34 CEST 2000
+
+" 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
+
+" Some Clean-keywords
+syn keyword cleanConditional if case
+syn keyword cleanLabel let! with where in of
+syn keyword cleanInclude from import
+syn keyword cleanSpecial Start
+syn keyword cleanKeyword infixl infixr infix
+syn keyword cleanBasicType Int Real Char Bool String
+syn keyword cleanSpecialType World ProcId Void Files File
+syn keyword cleanModuleSystem module implementation definition system
+syn keyword cleanTypeClass class instance export
+
+" To do some Denotation Highlighting
+syn keyword cleanBoolDenot True False
+syn region  cleanStringDenot start=+"+ end=+"+
+syn match cleanCharDenot "'.'"
+syn match cleanCharsDenot "'[^'\\]*\(\\.[^'\\]\)*'" contained
+syn match cleanIntegerDenot "[+-~]\=\<\(\d\+\|0[0-7]\+\|0x[0-9A-Fa-f]\+\)\>"
+syn match cleanRealDenot "[+-~]\=\<\d\+\.\d+\(E[+-~]\=\d+\)\="
+
+" To highlight the use of lists, tuples and arrays
+syn region cleanList start="\[" end="\]" contains=ALL
+syn region cleanRecord start="{" end="}" contains=ALL
+syn region cleanArray start="{:" end=":}" contains=ALL
+syn match cleanTuple "([^=]*,[^=]*)" contains=ALL
+
+" To do some Comment Highlighting
+syn region cleanComment start="/\*"  end="\*/" contains=cleanComment
+syn match cleanComment "//.*"
+
+" Now for some useful typedefinitionrecognition
+syn match cleanFuncTypeDef "\([a-zA-Z].*\|(\=[-~@#$%^?!+*<>\/|&=:]\+)\=\)[ \t]*\(infix[lr]\=\)\=[ \t]*\d\=[ \t]*::.*->.*" contains=cleanSpecial
+
+" 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_clean_syntax_init")
+  if version < 508
+    let did_clean_syntax_init = 1
+    command -nargs=+ HiLink hi link <args>
+  else
+    command -nargs=+ HiLink hi def link <args>
+  endif
+
+   " Comments
+   HiLink cleanComment      Comment
+   " Constants and denotations
+   HiLink cleanCharsDenot   String
+   HiLink cleanStringDenot  String
+   HiLink cleanCharDenot    Character
+   HiLink cleanIntegerDenot Number
+   HiLink cleanBoolDenot    Boolean
+   HiLink cleanRealDenot    Float
+   " Identifiers
+   " Statements
+   HiLink cleanTypeClass    Keyword
+   HiLink cleanConditional  Conditional
+   HiLink cleanLabel		Label
+   HiLink cleanKeyword      Keyword
+   " Generic Preprocessing
+   HiLink cleanInclude      Include
+   HiLink cleanModuleSystem PreProc
+   " Type
+   HiLink cleanBasicType    Type
+   HiLink cleanSpecialType  Type
+   HiLink cleanFuncTypeDef  Typedef
+   " Special
+   HiLink cleanSpecial      Special
+   HiLink cleanList			Special
+   HiLink cleanArray		Special
+   HiLink cleanRecord		Special
+   HiLink cleanTuple		Special
+   " Error
+   " Todo
+
+  delcommand HiLink
+endif
+
+let b:current_syntax = "clean"
+
+" vim: ts=4